REFERENCE TO RELATED APPLICATIONS

This application claims priority to U.S. Patent Application No. 17/074,015, filed on October 19, 2020, entitled “Systems and Methods for Footwear Sole Debris Cleaning and Sanitization,” and priority to U.S. Patent Application No. 17/074,025, filed on October 19, 2020, entitled “Ultraviolet Shielding Devices, Systems, and Methods.” The entire contents of the above-referenced applications are incorporated herein by reference.

TECHNICAL FIELD

This application relates generally to footwear sanitization techniques and, more particularly, to ultraviolet shielding techniques.

BACKGROUND

Biocontamination, including the spread of bacteria and viruses, has traditionally been a threat to humans and animals. Bacteria, viruses, and other microorganisms that can cause serious illness or infectious diseases are typically spread by persons walking into contaminated areas and then transporting the contaminants to other areas via the soles of their footwear. Such contaminants are then typically deposited from the soles of a person’s footwear to previously uncontaminated floor surfaces from which these contaminants further spread to the soles of other persons walking on the floor surfaces. This cycle can continue until contaminants are spread throughout a building or buildings as persons’ with contaminated soles move from place to place.

Eventually some persons will touch the soles of their shoes or floor surfaces, or contaminants can become airborne, resulting in dangerous exposures to anyone within contaminated areas. Hospitals, other healthcare facilities, or facilities having a high density of people are especially vulnerable to contaminants due to a significantly increased possibility that persons will be exposed to harmful bacteria, viruses, and other microorganisms. Biocontaminants have spread from the soles of contaminated shoes to various types of floor surfaces including cement floors, wood floors, and carpeted floors, which are often subsequently picked up directly by persons in contact with such floor surfaces or indirectly via their footwear soles. Shoe sole cleaning, such as in residential environments, is largely limited to manual debris removal via outdoor and indoor floor mats, which are typically located in close proximity to main entryways. These devices provide varying levels of debris removal from shoe soles. Due to their inherent design, they are incapable of removing or eliminating disease-causing microscopic organisms and biocontaminants such as bacteria, viruses and other harmful germs and spores from the shoe sole.

There are existing systems that provide for the reduction of pathogens from the soles of shoes. However, these systems do not adequately prevent recontamination of footwear soles after the decontamination process. Also, current systems provide minimal to no ultraviolet (UV) light shielding to users during the decontamination process. Hence, there is a need to more effectively and safely reduce or eliminate the likelihood of spreading biocontaminants via the footwear soles of persons moving from place to place, while protecting individual users from potentially harmful UV rays.

SUMMARY

The application, in various implementations, addresses deficiencies associated with cleaning and sanitizing footwear soles.

This application describes exemplary systems, methods, and devices that effectively remove and collect debris from footwear soles and also effectively sanitize the bottom of footwear (also referred to herein as a “sole” or “soles”). Footwear may include, without limitation, shoes, sneakers, sandals, slippers, boots, and any type of foot apparel worn by users to protect their feet. The exemplary cleaning and sanitizing techniques described herein create a cleaner and healthier environment in daily living, recreational, and/or working areas. The exemplary systems, methods, and devices also incorporate techniques for screening a user from any UV light that goes beyond or escapes past the user’s footwear including, without limitation, deploying a UV shield and/or controlling UV light emissions such that UV light is only emitted when a user’s footwear is determined to be in a designated position.

In some implementations, the inventive systems, methods and devices herein provide a fully integrated debris removal stage with a pathogen and/or contaminant sanitization stage. Such a two-stage process and/or sequence is advantageous because debris collected on footwear soles that may compromise or inhibit effective sanitization of the footwear soles is removed before the sanitization stage to eliminate any physical or line-of-sight barrier between a UV emitter and contaminants and/or pathogens on a footwear sole.

The Centers for Disease Control and Prevention (CDC) and independent hospital reports claim that pathogens are commonly transported by footwear from one area to another. In various implementations, the systems, methods, and devices described herein promote a forward directional or one-way travel path having an entrance and an exit for the user to move through the footwear sole cleaning and sanitization process. This advantageously eliminates the possibility that users will re-contaminate their footwear soles by back-tracking their steps directly into the path of all previous users.

In one aspect, a footwear sole cleaning and sanitization device includes a housing having a top surface arranged to support a user while standing on the top surface, a first side positioned adjacent to a user entry portal, and a second side positioned on an opposing side of the housing to the first side where the second side is positioned adjacent to a user exit portal. The device includes at least one railing that is mounted on the top surface and extends between the first side and the second side of the housing such that at least one railing defines a pathway through which the user passes from the user entry portal to the user exit portal.

The device also includes a debris remover having one or more debris removal elements that extend toward a debris removal opening in the top surface. The one or more debris removal elements may be arranged to contact the footwear sole while the footwear sole is positioned over the debris removal opening and remove debris from the footwear sole. The debris removal opening may be positioned in proximity to the first side of the housing. The device also includes a sanitizer having one or more sanitizing elements directed toward one or more sanitizing interfaces in the top surface. The one or more sanitizing elements may be substantially aligned with the footwear sole while the footwear sole is positioned over the one or more sanitizing interfaces that irradiate contaminants on the footwear sole. The one or more sanitizing interfaces may be positioned laterally on the top surface between the debris removal opening and the second side of the housing. The device may further include one or more sensors arranged to generate sensor data based on a detected position of the footwear sole, detected position of the user, detected temperature of the device, detected presence of debris on the footwear sole, and/or detected presence of a contaminant on the footwear sole. The device may include a user interface arranged to provide one or more cues to the user during operations of the device where the one or more cues may include an instruction to the user to position the footwear sole over the debris removal opening and/or the sanitizing interfaces. The device may also include a controller arranged to: i) receive the sensor data from the one or more sensors; i) control operations of the debris remover and/or sanitizer in response to the received sensor data, and iii) send cue instructions associated with the one or more cues to the user interface.

Cue instructions may include one or more warnings to inform a user that they cannot step on the surface of the debris removal and sanitization device without footwear. The device may include one or more signs in proximity to the entry portal that include a warning that an individual should wear footwear when using the device.

In one implementation, the one or more sanitizing elements includes one or more UV emitters arranged to emit UV light through the one or more sanitizing interfaces toward the footwear sole to remove a portion of the contaminants. The controller may be arranged to control the activation of the one or more UV emitters in response to the received sensor data indicating a detected position of the footwear sole in proximity to the one or more sanitizer interfaces.

The device may include a UV shield arranged to block a portion of the emitted UV light that is emitted toward the user and not incident on the footwear sole. A portion of the UV shield may be positioned vertically above, vertically below, or laterally adjacent to footwear of the user and aligned horizontally with respect to the sanitizing interface to block a portion of emitted UV light not incident on the footwear sole. Additionally or alternatively, a UV shielding apparatus may be included in the sanitizing interface to stop UV rays at the footwear surface and protect an individual from potentially harmful UV rays.

The one or more debris removal elements may include one or more brushes arranged to provide abrasive contact to the footwear sole to remove the debris from the footwear sole. The one or more brushes may include one or more rotary brushes connected to one or more rotary brush motors. The controller may be arranged to control the activation of the one or more rotary brush motors in response to the received sensor data indicating a detected position of the footwear sole in proximity to the debris removal opening. The one or more debris removal elements may include one or more stationary brushes.

The user interface may include one or more cue elements mounted on the top surface of the housing where the one or more cue elements are arranged to provide a portion of the one or more cues to the user. The user interface may include a display positioned vertically above the housing that provides a portion of the one or more cues to the user. A cue may include a notice indicating that a debris removal bin is full and/or needs to be emptied. The one or more cues may include visual cues, audio cues, and/or haptic cues. The one or more cues may include one or more text, graphical images, and/or universally recognized symbols,

The user entry portal may be configured to inhibit the user from exiting the pathway along the top surface of the housing via the user entry portal. The user entry portal may include a barrier and/or gate configured to allow only entry via the user entry portal. The gate may include a swing arm, a turnstile, a single swing panel, and/or dual swing panels.

In another aspect, a method for cleaning and sanitizing a footwear sole includes providing a housing; configuring the housing to have a top surface arranged to support a user while standing on the top surface, a first side positioned adjacent to a user entry portal, and a second side positioned on an opposing side of the housing to the first side where the second side is positioned adjacent to a user exit portal; mounting at least one railing on the top surface; extending the at least one railing between the first side and the second side of the housing where the at least one railing defines a pathway through which the user passes along from the user entry portal to the user exit portal; removing debris from the footwear sole using a debris remover having one or more debris removal elements extending toward a debris removal opening in the top surface; configuring the one or more debris removal elements to contact the footwear sole while the footwear sole is positioned over the debris removal opening; positioning the debris removal opening in proximity to the first side of the housing; and removing contaminants from the footwear sole using a sanitizer having one or more sanitizing elements directed toward one or more sanitizing interfaces in the top surface. The method further includes: aligning the one or more sanitizing elements with the footwear sole while the footwear sole is positioned over the one or more sanitizing interfaces and removing contaminants from the footwear sole; positioning the one or more sanitizing interfaces laterally on the top surface between the debris removal opening and the second side of the housing; generating sensor data based on a detected position of the footwear sole, detected a position of the user, detected temperature of the device, detected presence of debris on the footwear sole, and/or detected presence of a contaminant on the footwear sole; controlling operations of the debris remover and/or sanitizer in response to the sensor data; sending cue instructions associated with the one or more cues to a user interface; and providing the one or more cues to the user during operations via the user interface, where the one or more cues include an instruction to the user to position the footwear sole over the debris removal opening and/or the sanitizing interface.

In a further aspect, a cueing system for directing user actions and device operations during footwear sole cleaning and sanitization includes one or more sensors arranged to generate sensor data based on a detected position of the footwear sole, detected position of the user, detected temperature of the device, detected presence of debris on the footwear sole, and/or detected presence of a contaminant on the footwear sole. The one or more sensors may include one or more weight sensors that provide sensor data to the controller including the detected weight of a user and/or articles resting on the surface of the debris cleaning and sanitizing device. The controller may compare the detected weight received from the one or more weight sensors to a maximum weight or minimum weight setting. If the detected weight is greater than the maximum weight limit, the controller may issue a warning via the user interface that the weight is too high. The controller may perform one or more actions such as turn off the device until the excess weight condition is removed. The controller may compared the weight with a minimum limit to, for example, ensure that the user on the surface is an adult or of a sufficient size before allowing certain operations of the device. The controller may issue a cue and/or warning via the user interface that the user cannot operate the device.

The cueing system may also include a user interface arranged to provide one or more cues to the user during operations of the device. The one or more cues may include an instruction to the user to position the footwear sole over a debris removal opening associated with a debris remover and/or over a sanitizing interface associated with a sanitizer. The cueing system may further include a controller arranged to: i) receive the sensor data from the one or more sensors, ii) control operations of the debris remover and/or the sanitizer in response to the received sensor data, and iii) send cue instructions associated with the one or more cues to the user interface to direct the user to position the footwear sole in proximity to the debris removal opening and/or the sanitizing interface, where the operations include removing debris from the footwear sole and/or removing contaminants from the footwear sole.

In yet another aspect, a UV shielding device includes a sanitizing interface including a top surface arranged to support first footwear positioned above the sanitizing interface. The sanitizing interface includes a translucent material arranged to allow UV light to pass through. The device also includes a sensor arranged to detect a presence of the first footwear, a UV emitter arranged to emit the UV light toward the footwear and through the sanitizing interface, and an adjustable UV shield positioned adjacent to the sanitizing interface. The adjustable UV shield is also arranged to adjustably conform to a shape of the first footwear positioned above the sanitizing interface. The UV shield may include a first perimeter being positioned in close proximity laterally to a perimeter of a sole of the first footwear.

The sanitizing interface may include glass, plexiglass, plastic, a grate, and/or a material configured to allow UV light to pass through. The adjustable UV shield may be positioned vertically above or below the sanitizing interface. The adjustable UV shield may include a plurality of cutouts corresponding to a plurality of different footwear sizes, where the plurality of cutouts is stacked vertically between the UV emitter and the sanitizing interface.

The adjustable UV shield may include an aperture wall arranged to expand and contract in response to a size of the first footwear. The aperture wall may include one or more link bearings arranged to allow the aperture wall position to form the first perimeter positioned in close proximity to the perimeter of the sole of the first footwear.

The UV shield may include one or more shutters arranged to selectively block or allow UV light to pass through from the UV emitter toward the first footwear. The sensor may be arranged to determine the shape of the first footwear and generate first footwear shape data. A controller may be arranged to receive the first footwear shape data and adjust the UV shield to conform substantially to the shape of the first footwear positioned above the sanitizing interface. The sensor may be arranged to determine the shape of a second footwear and generate second footwear shape data while the controller may be arranged to receive the second footwear shape data and adjust the UV shield to adjustably conform to a shape of the second footwear positioned above the sanitizing interface.

Another aspect includes a method of providing UV shielding including: supporting first footwear positioned above a sanitizing interface; detecting a presence of the first footwear; in response to detecting the presence of the first footwear, emitting UV light toward the first footwear; passing the UV light through a translucent material of the sanitizing interface; positioning an adjustable UV shield adjacent to the sanitizing interface; and conforming the adjustable UV shield substantially to a shape of the first footwear positioned above the sanitizing interface including positioning a first perimeter of the adjustable UV shield in close proximity laterally to a perimeter of a sole of the first footwear.

In a further aspect, an adjustable UV shield includes one or more UV light blocking elements arranged to selectively block or pass through UV light received from a UV emitter toward footwear. The adjustable UV shield also includes an electrical interface arranged to receive a control signal from a controller where the control signal includes instructions to the one or more UV blocking elements to selectively block or pass through the UV light received from the UV emitter toward the footwear. The adjustable UV shield may be positioned adjacent to a sanitizing interface arranged to support the footwear and arranged to adjustably conform to a shape of the footwear by adjusting a position of a perimeter of the adjustable UV shield in close proximity laterally to a perimeter of a sole of the footwear.

Any two or more of the features described in this specification, including in this summary section, may be combined to form implementations not specifically described in this specification. Furthermore, while this specification may refer to examples of systems, methods, and devices related to footwear soles for humans, such techniques also apply equally to cleaning and sanitizing feet or footwear associated with animals. The details of one or more implementations are set forth in the accompanying drawings and the following description. Other features and advantages will be apparent from the description and drawings, and from the claims.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram of an exemplary sole debris cleaning and sanitization system and/or device;

FIG. 2 shows a diagram of a computer system;

FIGS. 3A-3G show a series of user interface screen shots displayed to a user as they operate the exemplary sole debris cleaning and sanitization systems of FIGS. 1 and 4;

FIG. 4 is a block diagram of a sole debris cleaning and sanitization system and/or device that illustrates a user’s position before, during, and after the debris cleaning and sanitization process;

FIG. 5 shows a process for performing debris cleaning and sanitization;

FIGS. 6A, 6B, and 6C show a specification table for an exemplary configuration of a debris cleaning and sanitization device;

FIGS. 7A and 7B illustrate positions of a lever-based UV shielding device during a UV sanitization and/or decontamination process;

FIG 8 illustrates first and second positions of an elastic aperture UV shielding device;

FIGS. 9A and 9B shows side views of an aperture wall of the elastic aperture UV shield device of FIG. 8 including a closed shield for small footwear and an expanded shield for a larger footwear;

FIG. 10A shows a top view of a portion of the aperture wall of FIG. 9 including a linkage bearing and wedge shape curtain foots;

FIG. 10B shows a side view of the linkage bearing of FIG. 10A.

FIGS. 11 A and 11 B illustrate how the elastic aperture UV shielding device expands and contracts depending on the size of footwear;

FIG. 12 shows an electric aperture UV shielding device including multiple film layers;

FIG. 13 is a cross-sectional view of a UV sanitization system including a UV shielding layer; and FIG. 14 shows a process for providing UV shielding.

Like reference numerals in different figures indicate like elements.

DETAILED DESCRIPTION

The application, in various implementations, addresses deficiencies associated with cleaning and sanitizing footwear soles. This application describes exemplary systems, methods, and devices that effectively remove and collect debris from footwear soles and also effectively sanitize the bottoms and/or soles of footwear. The exemplary cleaning and sanitizing techniques described herein create a cleaner and healthier environment in daily living, recreational, and/or working areas. The exemplary systems, methods, and devices also incorporate techniques for screening a user from any UV light that goes beyond or escapes past the user’s footwear including, without limitation, deploying a UV shield and/or controlling UV light emissions such that UV light is only emitted when a user’s footwear is determined to be in a designated position.

FIG. 1 is a diagram of an exemplary sole debris cleaning and sanitization system and/or device 100 including a debris cleaner 134 and sanitizer 148 within housing 102. Housing 102 includes a top surface 104, a first side 106 that is adjacent to a user entry portal 140, and a second side 108 that is adjacent to a user exit portal 142. A first railing 114 and second railing 116 extend along sides 144 and 146 respectively and may be mounted on top surface 104. In some implementations, only one railing such as railing 116 is mounted on top surface 104.

Railing 116 may include one or more rails such as rail 118 that may extend horizontally or vertically to form railing 116. In one configuration, railings 114 and 116 define a pathway through which a user passes along from user entry portal 140 to user exit portal 142. Railing 114 and/or 116 may provide hand holding rails such as rail 118 to allow a user to support themselves while moving along the pathway or provide support while moving their feet to various positions along top surface 104. Debris remover 134 may have one or more debris removal elements, e.g., brushes, extending toward a debris removal opening 110 in top surface 104. The brushes may be arranged to contact the footwear sole of a user while the footwear sole is positioned over the debris removal opening 110 and remove debris from the footwear sole.

In one implementation, the debris removal opening 110 is in proximity or substantially adjacent to the first side 106 and/or user entry port 140. Stepping areas 130 may provide locations where a user can place one shoe while contacting their other shoe with the brushes of debris remover 134 or place both shoes before or after the debris removal brushes are rotated to remove debris from footwear soles. In one implementation, the brushes of debris remover 134 are stationary, requiring a user to move the footwear against the brushes in an abrasive manner to remove debris on the footwear soles.

Sanitizer 148 may have one or more sanitizing elements, e.g., a UV emitter that emits UV light, directed toward one or more sanitizing interfaces 112 on top surface 104. The UV emitter or emitters may include one or more UV-LEDs and/or UV mercury lamps. The emitted UV light and/or rays may include wavelengths from about 100 to 380 nm. The UV emitter or emitters may include at least one of a UV-A emitter (e.g., emitting UV light having about 320 to 400 nm wavelengths), a UV-B emitter (e.g., emitting UV light having about 280 to 320 nm wavelengths), and a UV- C emitter (e.g., emitting UV light having about 200 to 280 nm). The sanitizing elements will be substantially aligned with a footwear sole while the footwear sole is positioned over the one or more sanitizing interfaces 112 to remove contaminants from the footwear sole. In one implementation, the one or more sanitizing interfaces 112 are positioned laterally on top surface 104 between debris removal opening 110 and the second side 108 and/or user exit portal 142 of the housing 102. Sanitizing interfaces 112 may include a transparent, semi-transparent, or translucent material that passes through UV light emitted from the one or more UV emitters toward a footwear sole or soles positioned over one or more sanitizing interfaces 112. A sanitizing interface may include glass, plexiglass, plastic, grates, and/or a material configured to allow UV light to pass through. The one or more sanitizing interfaces 112 may reside within and/or define one or more sanitization areas. The sanitization areas may be shaped to form an outline of, for example, shoes or other footwear as illustrated in FIG. 1. Top surface 104 may include a stop area 136 to accommodate high-heeled shoes. Housing 102 may include one or more sensors 128 arranged to generate sensor data based on a detected position of a footwear sole, detected position of a user, detected temperature of a component of system 100, detected presence of debris on a footwear sole, and/or a detected presence of a contaminant on a footwear sole, In one implementation, sensors 128 are arranged to detect the presence and/or position of footwear soles within the sanitization areas defined by sanitization interfaces 112. Although not shown in FIG. 1 , system 100 may include other sensors in proximity to debris removal opening 110 to detect when footwear is in proximity and/or in contact with debris remover 134. Another sensor may monitor the amount of debris collected in debris removal drawer 138. Drawer 138 may store debris removed from footwear and provide for convenient removal and disposal of the debris. Proximity sensors may be positioned at the user entry portal 140 and/or user exit portal 142 to detect when a user enters or exits the pathway of the system respectively. Sensors may include, without limitation, optical sensors, pressure sensors, sonic sensors, haptic sensors, and temperature sensors.

Housing 102 may include a user interface arranged to provide one or more cues to a user during operations of the device. The user interface may include display 120, one or more visual indicator elements on top surface 104, and one or more audio speakers that may issue audio commands and/or beeps to a user to perform certain actions during the cleaning and sanitization process. The cues may include an instruction to a user to position their footwear sole or soles over the debris removal opening 110, position their footwear sole or soles over the sanitizing interfaces 112, enter and/or step onto portions of top surface 104 such as, for example, stepping areas 130 when the user enters user entry portal 140, and/or exits or step off top surface 104 via user exit portal 142. System 100 may include a phone caddie 122 and/or storage container which may be arranged to hold a user’s phone and/or may be configured to clean and sanitize the user’s phone.

System 100 may include a controller, e.g., controller 410 of FIG. 4, arranged to: i) receive sensor data from the one or more sensors such as sensors128; i) control operations of the debris remover 134 and/or sanitizer in 148 response to the received sensor data, and iii) send cue instructions associated with the one or more cues to the user interface for display to a user via, for example, display 120. The controller may include a computer system. FIG. 2 includes a block diagram of a computer system 200 for performing the functions of a computer such as for the controller associated with FIG. 1 and/or controller 410 of FIG. 4. The exemplary computer system 200 includes a central processing unit (CPU) 202, a memory 204, and an interconnect bus 206. The CPU 202 may include a single microprocessor or a plurality of microprocessors for configuring computer system 200 as a multi-processor system. The memory 204 illustratively includes a main memory and a read only memory. The computer 200 also includes the mass storage device 208 having, for example, various disk drives, tape drives, etc. The main memory 204 also includes dynamic random access memory (DRAM) and high-speed cache memory. In operation, the main memory 204 stores at least portions of instructions and data for execution by the CPU 202.

The mass storage 208 may include one or more magnetic disk or tape drives or optical disk drives or solid state memory, for storing data and instructions for use by the CPU 202. At least one component of the mass storage system 208, preferably in the form of a disk drive, solid state, or tape drive, stores the database used for processing sensor data and/or controlling operations of system 100 and/or 400. The mass storage system 208 may also include one or more drives for various portable media, such as a floppy disk, flash drive, a compact disc read only memory (CD-ROM, DVD, CD-RW, and variants), memory stick, or an integrated circuit nonvolatile memory adapter (i.e. PC-MCIA adapter) to input and output data and code to and from the computer system 200.

The computer system 200 may also include one or more input/output interfaces for communications, shown by way of example, as interface 210 and/or transceiver for data communications via the network 212 (or network 104 of FIG. 1). The data interface 210 may be a modem, an Ethernet card or any other suitable data communications device. To provide the functions of a computer 102, the data interface 210 may provide a relatively high-speed link to a network 212, such as an intranet , or the Internet, either directly or through another external interface. The communication link to the network 212 may be, for example, optical, wired, or wireless (e.g., via satellite or cellular network). Alternatively, the computer system 200 may include a mainframe or other type of host computer system capable of Web-based communications via the network 212. The computer system 200 may include software for operating a network application such as a web server and/or web client.

The computer system 200 may also include suitable input/output ports, that may interface with a portable data storage device, or use the interconnect bus 206 for interconnection with a local display 216 and keyboard 214 or the like serving as a local user interface for programming and/or data retrieval purposes. The display 216 and/or display 120 may include a touch screen capability to enable users to interface with the system 200 by touching portions of the surface of the display 216. Remote operations personnel may interact with the system 200 for controlling and/or programming the system from remote terminal devices via the network 212.

The computer system 200 may run a variety of application programs and store associated data in a database of mass storage system 208. One or more such applications may include a cleaning and sanitization process that controls various components of system 100 and/or provides cue to a user to perform certain actions during the cleaning and sanitization process.

The components contained in the computer system 200 may enable the computer system to be used as a server, workstation, personal computer, network terminal, mobile computing device, and the like. As discussed above, the computer system 200 may include one or more applications that enable cleaning and sanitization of a footwear sole or soles. The system 200 may include software and/or hardware that implements a web server application. The web server application may include software such as HTML, XML, WML, SGML, PHP (Hypertext Preprocessor), CGI, and like languages.

The foregoing features of the disclosure may be realized as a software component operating in the system 200 where the system 200 includes UNIX workstation, a Windows workstation, a LINUX workstation, or other type of workstation. Other operating systems may be employed such as, without limitation, Windows, MAC OS, and LINUX. In some aspects, the software can optionally be implemented as a C language computer program, or a computer program written in any high level language including, without limitation, JavaScript, Java, CSS, Python, PHP, Ruby, C++, C, Shell, C#, Objective-C, Go, R, TeX, VimL, Perl, Scala, CoffeeScript, Emacs Lisp, Swift, Fortran, or Visual BASIC. Certain script-based programs may be employed such as XML, WML, PHP, and so on. The system 200 may use a digital signal processor (DSP).

As stated previously, the mass storage 208 may include a database. The database may be any suitable database system, including the commercially available Microsoft Access database, and can be a local or distributed database system. A database system may implement Sybase and/or an SQL Server. The database may be supported by any suitable persistent data memory, such as a hard disk drive, RAID system, tape drive system, floppy diskette, or any other suitable system. The system 200 may include a database that is integrated with the system 200, however, it is understood that, in other implementations, the database and mass storage 208 can be an external element.

In certain implementations, the system 200 may include an Internet browser program and/or to be configured to operate as a web server. In some configurations, the client and/or web server may be configured to recognize and interpret various network protocols that may be used by a client or server program. Commonly used protocols include Hypertext Transfer Protocol (HTTP), File Transfer Protocol (FTP), Telnet, and Secure Sockets Layer (SSL), and Transport Layer Security (TLS), for example. However, new protocols and revisions of existing protocols may be frequently introduced. Thus, in order to support a new or revised protocol, a new revision of the server and/or client application may be continuously developed and released.

The computer system 200 may include a web server running a Web 2.0 application or the like. Web applications running on system 200 may use server-side dynamic content generation mechanisms such, without limitation, Java servlets, CGI, PHP, or ASP. In certain embodiments, mashed content may be generated by a web browser running, for example, client-side scripting including, without limitation, JavaScript and/or applets on a wireless device.

In certain implementations, system 100, 200, and/or 400 may include applications that employ asynchronous JavaScript + XML (Ajax) and like technologies that use asynchronous loading and content presentation techniques. These techniques may include, without limitation, XHTML and CSS for style presentation, document object model (DOM) API exposed by a web browser, asynchronous data exchange of XML data, and web browser side scripting, e.g., JavaScript. Certain web-based applications and services may utilize web protocols including, without limitation, the services-orientated access protocol (SOAP) and representational state transfer (REST). REST may utilize HTTP with XML.

The systems 100, 200, and/or 400 may also provide enhanced security and data encryption. Enhanced security may include access control, biometric authentication, cryptographic authentication, message integrity checking, encryption, digital rights management services, and/or other like security services. The security may include protocols such as IPSEC and IKE. The encryption may include, without limitation, DES, 3DES, AES, RSA, and any like public key or private key based schemes.

Generally, the inventive debris cleaning and sanitization process may include a sequence of stages where certain operations and/or user actions are performed. First, debris removal brushes of debris remover 134 and/or 406 engage and/or are activated by controller 410 upon a detected presence of a user’s footwear within the vicinity of debris removal opening 110. Narrow heeled shoes may be accommodated via placement of a high heel in designated stop area 136. A brush motor that was driving and/or rotating the brushes of debris remover 134 disengages when the footwear is detected by a sensor as being removed from the brushes and/or the debris removal opening 110. In one implementation, the duration in which the one or more brush motors are engaged is by default, infinite while a sensor detects that footwear is in the vicinity of the debris removal opening 110. This duration may be established during the system commissioning.

As debris accumulates in debris removal drawer 138, it may be discarded when full, which may be monitored for available capacity by a controller such as controller 410 via a drawer sensor. In some implementations, system 100 and/or 400 prompts, via a user interface such as interface 412 and/or display 120 for debris removal periodically, such as once daily. Custom drawer liners may line drawer 138 to simplify the debris removal process. After debris removal, a user places their shoes on sanitization areas defined by sanitization interfaces 112. An LED indication may provide proper placement feedback to a user of the shoe position(s). One or more LED indicators may be placed adjacent to the sanitization areas and/or display 120 may provide a graphical image of LED indicators such as shown in FIG. 3A-3C of indicators surrounding the sanitization areas. A red indicator may indicate that footwear placement is not properly aligned with sanitization interfaces 112 while a green indicator may indicate proper alignment of footwear. Audio, visual, and/or haptic commands and/or feedback may be provided alternatively or additionally to the user to effect proper footwear alignment via, for example, interface 412. Footwear placement indicators may be activated and deactivation by controller 410 based on sensor data received from sensors such as sensors 128 that indicator the presence or absence of footwear in certain locations on the top surface 104.

Once proper alignment is achieved, UV sanitization of footwear soles is activated by, for example, controller 410. The duration of sanitization may be configured by default by the manufacturer, by a controller such as controller 410, remotely by a remote programmer, and/or manually by a user. In one implementation, the sanitization duration, e.g., the duration that UV emitters are activated and emit UV light, may be about 8 - 10 seconds. The range of UV emitter activation duration may be adjustable from 1 second up to 180 seconds, or longer. In one implementation, an LED indication of the sanitization process is provided while sanitization occurs. A UV ray shield such as UV shield 124 may protect the user from direct UV light rays that escape past the user’s footwear during sanitization. The UV shield 124 may be foldable toward and away from the user and/or pathway. Controller 410 may engage a motor to deploy UV shield 124 before UV emitter activation and retract UV shield 124 after UV emitter activation. UV shield 124 may also function as a gate to inhibit a user from exiting via the user exit portal 142 until the sanitization function is completed.

When sanitization is complete, UV light(s) and emitters turn off and/or are instructed to turn off by controller 410 and the sanitization LED indication ceases. A user may be visually and/or audibly prompted to exit the machine top surface 104 at the opposite end from which he/she entered, i.e., via the user exit portal 142. A display such as display 120 and/or speaker may provide visual and/or audio confirmation and feedback to a user, as well as provide function, stage, and/or error status information to the user. Audio feedback may include simulated voice phrases and/or one or more audio beeps.

FIGS. 3A-3G show a series of user interface screen shots 300, 316, 320, 340, 350, 360, and 380 displayed to a user as they operate the exemplary sole debris cleaning and sanitization systems 100 and/or 400 during various stages of the cleaning and sanitization process. FIG. 3A includes a screen shot 300 of display 120 indicating that system 100 and/or 400, i.e., the unit, is ready for cleaning and sanitization of a user’s footwear sole(s). FIG. 3B includes a screen shot 316 of display 120 including a shoe size menu or table 318. Display 120 may via, for example, a touchscreen, enable a user to input their footwear size to the system 100 and/or 400. System 100 and/or 400 may use the inputted footwear size to configure sanitizer 404 to emit UV light over an area toward the footwear sole over an area corresponding to the sole size. FIG. 3C includes a screen shot 320 of display 120 indicating when the system 100 and/or 400 is operating in the sole debris removal stage. FIG. 3D includes a screen shot 340 of display 120 indicating when the system 100 and/or 400 is operating in the sanitization stage. FIG. 3E includes a screen shot 350 indicating that system 100 and/or 400 has completed the sanitization stage by, for example, removing an illumination within a footwear outline 352 and/or illuminating a yellow color icon of indicator 312. FIG. 3F includes a screen shot 360 of display 120 showing a troubleshooting information page or table 362 regarding status of systems 100, 200, and/or 400. FIG. 3G includes a screen shot 380 of display 120 showing programmable settings associated with various components of systems 100, 200, and/or 400 in table 382.

Screen shot 300 of FIG. 3A may include a footwear position image 302 in a first section 304 and a sanitization status based on indicators 306 in section 308. Footwear position image 302 shows that no footwear is engaged with debris remover 134 and/or 406. Section 308 may include a timer indicator 310 that indicates to a user the duration and/or remaining amount of time that UV emitters will be activated. Indicator 310 may include an analog clock image, counter, and/or status bar that indicates a remaining amount of time that sanitization will be activated. Screen shot 300 may include one or more status indicators 312 that indicate status of the system and/or whether system 100 and/or 400 is ready to perform a stage of the cleaning and sanitization.

For example, different colored indicators may be used to indicate different stages and/or different statuses of systems 100 and/or 400. For example, a green indicator 312 may be illuminated when the system 100 and/or 400 is ready to operate and/or a particular stage is ready to be initiated or is in operation. Status indicators may be illuminated according to table 362 of FIG. 3D. Screen shot 300 may include one or more selectable icons 314 that enable a user to navigate to various screens or return to a “Home” screen, navigate to a troubleshooting page, navigate to a system configuration page, and/or navigate to an information and/or search page. Screen shots 320 and 340 may have the same or similar visual indicators and/or images as screen shot 300. Screen shots 320, 340, 360 and 380 may also include navigation and/or system icons 314. Screen shot 380 may also include a settings table 382 that enables a user to configure certain setting such as, for example, UV emitter activation duration.

In one implementation, system 100 and/or 400 may operate to perform footwear sole(s) cleaning and sanitization according the follow operations. Display 120 and/or user interface 412 may illuminate a "Ready" LED and/or indicator such as green indicator 312, indicating that system 100 and/or 400 is ready for use. A user may then place one foot onto sole debris remover 134 and/or debris removal surface (brush area) at debris removal opening 110. One or more sensors may sense the presence of the user’s footwear. In response to detecting the footwear, display 120 may have a debris removal stage indicator and/or LED start blinking. After about a 1 second delay, controller 410 may initiate the debris removal process by engaging and/or activating one or more brush motors. Display 120 and/or interface 412 may change the illumination of the debris removal stage indicator and/or LED from blinking to solid illumination on display 120. Display 120 via screen shot 320 may show position image 322 indicating that the footwear is engaged and/or in the vicinity of debris remover 134.

The debris removal process continues until one or more sensors sense that the foot and/or footwear is no longer present and/or within the vicinity of debris remover 134 or the process has timed out.. Once the debris remover timer has timed out or the absence of footwear is detected and sensor data of such status is received by controller 410, controller 410 may deactivate the brush cleaning motors to stop the debris cleaning brushes from rotating. Also, the debris removal indicator and/or LED may be turned off and the "Ready" indicator and/or LED is illuminated. System 100 and/or 400 may include an E-Stop (emergency stop) button that a user may select on a support handle and/or rail 118 to deactivate the brush cleaning motors.

A user may then place one foot onto one or more of the UV sanitizer interfaces 112 and/or sanitization areas. Sensors such as sensor 128 may detect the presence of the user’s shoe and send sensor data to controller 410 while display 120 may illuminate a sanitization stage indicator and/or LED that blinks on display 120. Green/Red Arrows may indicate correct/incorrect shoe sole positioning with respect to the one or more sanitizing interfaces 112 on display 120 and/or via indicator elements on top surface 104. When a shoe is properly positioned, the green position arrows change from red to green and hold.

The user may then place their second foot onto the remaining sanitization area of the sanitizing interfaces 112. Sensors 128 may then detect the presence of the second shoe and send sensor data to controller 410 to indicate the presence of the second shoe in the vicinity of sanitizing interfaces 112. Green/Red Arrows may indicate correct/incorrect shoe sole positioning via display 120 and/or via indicator elements on top surface 104. When the second shoe is properly positioned, the green position arrows illuminate and hold. After both shoes are properly positioned, sanitization stage indicator and/or LED of display 120 blinks rapidly for about 2 seconds. After two seconds, the sanitization stage indicator and/or LED illuminates solid and a sanitization graphic is engaged on display 120. UV sanitization emitters may be activated and/or engaged for the prescribed and/or configured duration. When the UV sanitizing process is complete, the UV Emitters are shut off by controller 410, sanitization indicators and/or LED indication ends, the sanitization graphic turns off, and the Ready indicator and/or LED is illuminated.

Whenever controller 410 in response to, for example, sensor data, detects a fault, display 120 and/or interface 412 may illuminate a red indicator and/or LED and/or warning icon to indicate to a user that a fault has occurred. This may include a motor failure, overheating, UV emitter failure, and the like. System 100 and/or 400 may include optional cell phone sanitization and charging functions that may operate independently from sole cleaning and sanitizing functions. Display 120 and/or interface 412 may include representative icons that will be displayed accordingly during the respective phone functions. In certain configurations, both UV sanitization and debris cleaning are not operated simultaneously. In one implementation, no functions can be performed while system 100 and/or 400 is in a fault mode and/or stage. System 100 and/or 400 may prompt a user to discard collected debris from debris collection drawer 138 periodically such as once daily. FIG. 4 is a block diagram of a footwear sole debris cleaning and sanitization system and/or device 400 that illustrates a user’s position before 422, during 424, and after 426, the debris cleaning and sanitization process. System 400 includes a housing 402 having a footwear sanitizer 404, debris remover 406, sensors 408, a controller 410, a user interface 412, and data interface 414. Housing 402 may include a top surface 420 and/or 104 on which a user may stand in, for example, position 424. System 400 may also include user entry portal 416 and user exit portal 418.

User entry portal 416 may include a gate or other movable barrier that allows a user to step onto top surface 420, but prevents the user from stepping back off the top surface to position 422 to prevent possible re-contamination of the user’s footwear. The barrier may include, without limitation, a swing arm, a railing, a single swinging panel, dual swinging panel, and a turn-style. The barrier may be configured to swing inwardly toward user exist portal 418 from a substantially perpendicular orientation with respect to a railing such as railing 116, to a substantially parallel orientation with respect to railing 116 to allow a user to enter the pathway on top surface 420. The barrier, however, may not be configured to swing backwards toward position 422 to prevent a user from back tracking from top surface 420 through the user entry port 416. The barrier may be mounted on and/or extend from railing 114 and/or 116. The barrier may be mounted independently on housing 402. User exit portal 418 may include a similar barrier as described with respect to user entry portal 416 to possibly prevent a user from stepping on top surface 420 from user exit portal 418 and/or to prevent a user from prematurely exiting the top surface 420 before the sanitization process is completed. As previously discussed, UV shield 124 may also function as a barrier to prevent an improper entry or a premature exit by a user.

FIG. 5 shows a process 500 for performing debris cleaning and sanitization. Process 500 includes: providing a housing 102 and/or 402 (Step 502) and configuring the housing 102 and/or 402 to have: a top surface 104 and/or 420 arranged to support a user while standing on the top surface 104 and/or 420, a first side 106 positioned adjacent to a user entry portal 140 and/or 416, and a second side 108 positioned on an opposing side of the housing 102 to the first side 106 where the second side 106 is positioned adjacent to a user exit portal 142 and/or 418 (Step 504); mounting at least one railing 114 and/or 116 on the top surface 104 and/or 420 (Step 506); extending the at least one railing 114 and/or 116 between the first side 106 and the second side 108 of the housing 102 and/or 402, where the at least one railing 114 and/or 116 defines a pathway through which the user passes along from the user entry portal 140 and/or 416 to the user exit portal 142 and/or 418 (Step 508); removing debris from the footwear sole using a debris remover 134 and 406 having one or more debris removal elements extending toward a debris removal opening 110 in the top surface 104 and/or 420 (Step 510); configuring the one or more debris removal elements to contact the footwear sole while the footwear sole is positioned over the debris removal opening 110 (Step 512); and positioning the debris removal opening 110 in proximity to the first side 106 of the housing 102 and/or 402 (Step 514).

Process 500 further includes: removing contaminants from the footwear sole using a sanitizer 148 and/or 404 having one or more sanitizing elements directed toward one or more sanitizing interfaces 112 in the top surface 104 and/or 420 (Step 516); aligning the one or more sanitizing elements with the footwear sole while the footwear sole is positioned over the one or more sanitizing interfaces 112 and removing contaminants from the footwear sole (Step 518); positioning the one or more sanitizing interfaces 112 laterally on the top surface 104 and/or 420 between the debris removal opening 110 and the second side 108 of housing 102 and/or 402 (Step 520); generating sensor data from one or more sensors such as sensors 128 based on at least one of a detected position of the footwear sole, detected a position of the user, detected temperature of the device, detected presence of debris on the footwear sole, and detected presence of a contaminant on the footwear sole (Step 522); controlling operations of at least one of the debris remover 134 and/or 406 and sanitizer 148 and/or 404 in response to the sensor data (Step 524); sending cue instructions associated with the one or more cues to a user interface 412 including display 120 (Step 526); and providing the one or more cues to the user during operations of the system via the user interface 412, where the one or more cues includes an instruction to the user to position the footwear sole over at least one of the debris removal opening 110 and the sanitizing interfaces 148. FIGS. 6A, 6B, and 6C show a specification table 600 for an exemplary configuration of a debris cleaning and sanitization system such as system 100 and/or 400.

FIGS. 7 A through 14 describe various systems, devices, and techniques for providing UV shielding to users while having their footwear sanitized and/or decontaminated using UV light.

FIGS. 7A and 7B illustrate positions 700 and 750 of a lever-based UV shielding device 702 during a UV sanitization and/or decontamination process. Device 702 includes a footwear surface platform 704, footwear surface platform link 706, lever 708 w/ mid-fulcrum 720, an articulating link 710, a guide link 712, and UV- C shield 714.

In operation, as a footwear 716 presses in downward direction 718 on platform 704, as illustrated in FIG. 7B, platform 704 also moves in the downward direction 718, pushing link 706 downward. This causes lever 708 to pivot in a counter-clockwise direction around fulcrum 720 which pushes links 710 and 712 in an upward direction 722, resulting in UV-C shield 714 moving upward and rotating in direction 724 into a position surrounding and/or adjacent to a portion of footwear 716.

FIG 8 illustrates a top down view 806 of a first position with a relaxed cable 802 and a second position with an expanded cable 804 of an elastic aperture UV shielding device 800. Device 800 has a tensioning component 808 including a tension springs 810 and 812 along with pulleys 814 to provide tension on the relaxed cable 802 and expanded cable 804 such that the device 800 substantially conforms to the perimeter of a sole of footwear. Hence, the relaxed cable 802 position may conform to a smaller sized shoe, while the expanded cable 804 may conform to a larger sized shoe by expanding in direction 820. The relaxed cable 802 and/or expanded cable 804 may include linkage wall sections 816 and link bearings 818.

FIGS. 9A and 9B show side views of an aperture wall of the elastic aperture UV shield device 800 of FIG. 8 including a closed shield for smaller footwear and an expanded shield for a larger footwear. FIG. 9A shows a front (inside) view 900 of a portion of an elastic aperture linkage wall 902, cable 912, and a tension spring 904 of, for example, device 800 in a relaxed position. Wall 902 has a link two-piece pocket curtain system 906 including curtain foot 908 and linkage wall 910 that is repeated along the wall 902 to enable wall 902 to expand or contract while maintaining a uninterrupted physical UV shield along the wall 900. View 900 shows wall 902 in a relaxed position and spring 904 is in an expanded position while a larger portion of linkage wall 910 is overlapped by adjacent curtain feet 910. FIG. 9B shows a front (inside) view 950 of a portion of an elastic aperture linkage wall 902, cable 912, and a tension spring 904 of, for example, device 800 in an expanded position. Wall 902 has a link two-piece pocket curtain system 906 including curtain foot 908 and linkage wall 910 that is repeated along the wall 902 to enable wall 902 to expand or contract while maintaining a uninterrupted physical shield along the wall 900. View 950 shows wall 902 in an expanded position and spring 904 is in a contracted position while a smaller portion of linkage wall 910 is overlapped by adjacent curtain feet 910, i.e., more of linkage wall 910 is visible between its adjacent curtain feet 910.

FIG. 10A shows a top down view 1000 of a portion of aperture wall 902 of FIG. 9 including a linkage bearing 1002, wedge shaped curtain feet 1004, and linkage walls 1006. The wedge shaped curtain feet 1004 provide a continuous UV shield along the curving perimeter of footwear.

FIG. 10B shows a side view 1050 of the link bearing 1002 and curtain foot 1004 of FIG. 10A. View 1050 illustrates how a curtain foot 1004 includes a foot extension 1010 that extends outwardly toward an outside area 1006 away from footwear. Link bearing 1002 allows a portion of aperture wall 902 in proximity to link bearing 1002 to move towards outside area 1006 or toward inside area 1008 that may be adjacent to footwear.

FIGS. 11 A and 11 B illustrate how the elastic aperture UV shielding device expands and contracts depending on the size of footwear. FIG. 11A includes a view 1100 of a smaller shoe 1102 adjacent to link bearings 1002 while aperture wall 902 is in a relaxed position. FIG. 11 B includes a view 1150 of a larger shoe 1152 adjacent to link bearings 1002 while aperture wall 902 is in an expanded position.

In operation, a footwear edge, e.g., footwear 1100, will contact each of the link bearings 1002 causing the bearings 1002 to deflect according to the footwear 1100 size. A cable, such as cable 912, unites all components of aperture wall 902 to promote a harmonized deflection reaction. Aperture wall 902 includes a pocket curtain having a repeating two-piece wall system 906 that is self-collapsing. The smaller linkage wall section 908 slides into adjacent larger wall sections and/or curtain feet 1004. Curtain feet 1004 include foot extensions 1010 that slide and/or extend laterally and block excess UV light emitted from a UV emitter from reaching a user. The cable spring resistance and cable pulley and/or tension system 808 may be located below a surface of, for example, platform 808 and/or top surface 420. System 808 may be replaced with an integrated spring system that is similar to that of an elastic metallic watch band. Link bearings 1002 may be spaced appropriately along the curtain wall 902 to best mirror and/or correspond to footwear 1102 or 1152 contours and/or their footwear sole perimeters.

FIG. 12 shows an exploded view of an electric aperture UV shielding device 1200 including multiple film layers. Device 1200 may include a top layer 1202 having 304 stainless steel (304 SS) with a largest footwear size cutout 1214, tempered glass 1204, polymer-dispersed liquid crystal (PDLC) film 1206 including a “medium range footwear size” cutout 1216, dielectric material 1208 including insulating material between adjacent layers of PDLC film 1206 and 1210, and PDLC film 1210 that may include a “smallest footwear size” cutout 1218, and a UV-C emitter 1212. One or more of layers 1202 through 1210 may form a sanitizing interface arranged to allow UV light to pass through from emitter 1212 toward footwear positioned above a top surface of layer 1202. In some implementations, a sanitizing interface may be positioned above layers 1202 through 1210 where layers 1202 through 1210 form a UV shield.

In operation, when a shoe size is selected either automatically or by a user via user interface 120 that falls into the “largest” category, neither of the PDLC films 1206 and 1210 are energized. This allows UV light from emitter 1212 to pass through all of the shapes and/or films 1206 and 1210, and pass through cutout 1214 to impact the sole of a shoe for UV sanitization. A third PDLC film may be included to compensate for shoes that have heel designs such as a lady’s dress shoe. If so, such an implementation may include an additional layer of dielectric material. When a shoe size is selected that falls into the “medium” category, PDLC film 1206 is energized. This allows UV light from emitter 1212 to pass through the medium sized shape cutout 1216. When a shoe size is selected that falls into the “smallest” category, PDLC film 1210 is energized. This allows UV light from emitter 1212 to pass through only the smallest shape cutout 1218. FIG. 13 is a cross-sectional view of a UV sanitization system 1300 such as may be implemented in sanitizer 404 or system 100 including a UV light source layer 1302, UV light blocking layer 1304, and a footwear sensing layer 1306 that may be in contact with a user’s footwear 1308. Footwear sensing layer 1306 may be arranged to detect the presence and/or size of footwear 1308 positioned above layer 1306. Footwear sensing layer 1306 may include a touchscreen and/or touch-sensitive surface arranged to sense the footwear 1306 size and/or position. Layer 1306 may include a resistive touchscreen, capacitive touchscreen, a projected capacitive touchscreen, an infrared touchscreen, and/or a surface acoustic wave (SAW) touch screen. Light blocking layer 1304 may include switchable glass to control the transmission of UV light from a UV light source in layer 1302 toward footwear 1308. UV light blocking layer 1304 may include a planar array of microshutters arranged to selectively allow UV light to pass through toward footwear 1308 while selectively blocking UV light that would otherwise escape past footwear 1308 and possibly toward a user’s body. Switchable glass of layer 1304 may include passive or active elements. For example, microshutters are active elements that close or open to block or allow light to pass through respectively. Layer 1304 may include electrochromic switchable glass. Microshutters may include microblinds. Microshutters may be based on curling electrodes and/or microelectromechanical systems (MEMS). System 1300 may include an additional translucent and/or transparent layer positioned above layer 1306 and arranged to act as a sanitizing interface.

In operation, light source layer 1302 may include one or more UV light emitters arranged to emit UV-A, UV-B, and/or UV-C light 1310 toward footwear 1308. Layer 1306 senses the presence and/or size of footwear 1308. Layer 1306 may sense the area of the sole of footwear 1308 in contact with or close proximity to a top surface of layer 1306. Layer 1306 may provide sensor data to controller 1312 and/or controller 410. Based on the sensor data received, controller 1312 or 410 may send instructions to layer 1304 and/or various elements thereof (e.g., shutters) to selectively activate (e.g., open) shutters to allow UV light to pass through and toward the sole of footwear 1308 while selectively de-activating (e.g., close) shutters to block UV light in areas of the top surface of layer 1306 that are not in contact with or in close proximity to the sole of footwear 1308. Controller 1312 and/or 410 may also control activation of the one or more UV light emitters of UV light source layer 1302 based on the detected presence of footwear 1308.

FIG. 14 shows a process 1400 for providing UV shielding including: supporting first footwear, such as footwear 1102, positioned above a sanitizing interface such as interface 112 (Step 1402); detecting a presence of the first footwear 1102 using one or more sensors 408 (Step 1404); in response to detecting the presence of the first footwear, positioning an adjustable UV shield such as UV shield 1200 adjacent to the sanitizing interface 112 (Step 1410); and conforming the adjustable UV shield 1200 substantially to a shape of the first footwear 1102 positioned above the sanitizing interface 112 including positioning a first perimeter of the adjustable UV shield 1200 in close proximity laterally to a perimeter of a sole of the first footwear 1102 (Step 1412), emitting UV light from an UV emitter such as emitter 1212 toward the first footwear 1102 (Step 1406); passing the UV light through a translucent material of the sanitizing interface 112 (Step 1408);.

Elements or steps of different implementations described may be combined to form other implementations not specifically set forth previously. Elements or steps may be left out of the systems or processes described previously without adversely affecting their operation or the operation of the system in general. Furthermore, various separate elements or steps may be combined into one or more individual elements or steps to perform the functions described in this specification.

Other implementations not specifically described in this specification are also within the scope of the following claims.

What is claimed is: