Technical problem One of the biggest worries and an unsolved problem for parents has always been the need to know, even when their children are not by their side, that their children are well, and to know where their children are and whether they need anything; the parents also need to be able to communicate with their children and be easily accessible to them. In other words, the problem lies in the fact that parents (or guardians) don't always know where their children are when they are not with them, and that they cannot always contact them easily, and vice versa, that children cannot, should the need arise, contact their parents or guardians easily.

Present achievments in the art The previously mentioned problems of communication and monitoring the child's movements have not been seriously examined. Throughout history, children have always remained relatively close to their homes, where they could easily be called home by their parents; they, too, could, should the need arise, call on their parents. Due to the contemporary lifestyle, where children spend most of their time away from their parents, parents and children are not able to establish contact so easily. In the last ten or twenty years certain solutions have been designed; however, these are better suited to other age groups. For example, older people sometimes wear a device-a pager in the form of a pendant which enables them to issue a distress call in the case they start feeling sick. Another form is a device which enables parents to hear their babies via a radio conection even when they are in another part of the house. Some parents solve this problem by buying an ordinary cell phone for their child. The drawbacks of this solution are the facts that mobile phones are relatively expensive and that children tend to lose the mobile phones, in their present forms, relatively easily. Another problem is that various bullies often try to steal or take the child's mobile phone by force. Aside from this, the biggest problem is the unlimited possibility of dialing any amount of numbers from the child's mobile phone; an even greater problem is that the child's mobile phone is accessible to anyone, exposing the child to manipulation from various dangerous individuals such as criminals, pedophiles, and even child traffickers.

Summary of the invention The primary goal of the invention is enabling telecommunication between the parent (or guardian) and their child at any moment.

The secondary goal of the invention is enabling telecommunication between the child and telephone numbers determined by the child's parents, e. g. the child's grandmothers, grandfathers, or friends, at any moment.

Additional goals and advantages of the invention will be disclosed partly in the following description, and partly through the application of the invention.

The mobile phone of this invention consists of a casing, the front side of which incorporates a rotational or sliding selector switch with a number of positions for dialling predetermined telephone numbers (e. g.

5-10 numbers), wherein each position represents one telephone number (according to the principle of the following example: position 1-mother's mobile phone, positon 2-father's mobile phone, position 3- grandmother's home number, position 4-a friend's phone number, position 5-another friend's phone number). A"neutral"position, a"silent mode"position, a microphone, a speaker, and a call button are also located on the front side of the casing. Inside the casing, a battery is located, as well as the existing technology which enables sending and receiving telephone calls, as seen in standard cell phones.

The mobile phone can ideally take the form of a pendant which is easy to carry and hard to lose, which means that it can be adapted so it can be worn as a pendant on a necklace, on a bracelet around the wrist, attached to a belt, attached to clothing by a safety pin or a Velcro strap, or simply carried in a pocket.

The mobile phone can be carried in this form, or it can be placed inside a decorative casingwhich can have various designs such as movie or cartoon heroes, hearts etc.

The mobile phone has a built-in"silent mode"so as not to disturb class in schools. The silent mode can be activated by moving the rotational or sliding switch into a predetermined position, or by a special button in the case of the usual button-based method of dialing numbers.

The mobile phone also includes a set of signal lights which determine the origin of missed calls. The lights also flash to signal incoming calls when the phone is in the silent mode.

This mobile telecommunications device can also enable the parent (guardian) to know the child's location, or the location of the mobile phone's owner, at all times, by identifying the location of the telecommunications transmitter which is closest to the child's mobile phone.

In order to prevent accidental dialing of numbers the rotational or sliding selector switch includes a neutral position.

The telephone numbers which can establish communication with the mobile phone are defined when the contract with a telephone company is signed, at which point the"core"telephone number is chosen (e. g. the telephone number of one of the child's parents). The core mobile phone can then be used to enable, by means of an SMS message, additional phone numbers to establish communication with the phone. These numbers can also be regulated through the Internet with the appropriate password.

The user and the company can also determine the daily duration of telephone conversations with specific numbers, thereby limiting the duration of the child's conversations with his/her friends.

The device can only call the predetermined numbers, and it can likewise only be called by these numbers. All the other calls are automatically redirected to the core mobile phone or an answering machine. The telecommunications company screeens all calls via an independent software program.

The device can also have an exclusively voice-dialing variant of the dialing system.

The device can be imprinted with a serial number, which will have to be shown to the company when the contract is signed, thereby reducing even further the risk of theft or robbery.

The device can also include an usophisticated alarm system which is activated if the child (the mobile phone's user) is in danger and isn't able to call his parents or guardians. In this case the core mobile phone would ring and the microphone in the child's device would transmit sound to the child's guardian, while sound wouldn't be transmitted in the other direction. Additionally, an (otherwise inactive) GPS locator can be activated in the same manner, transmitting the location of the mobile phone itself. The GPS locator would in this case be incorporated in the device.

Mobile devices presented in this invention can include an option to emit an alarm whenever the distance between the device and the user exceeds a certain predetermined distance (e. g. 3-5 metres), in order to warn the owner that the cell phone has been lost or stolen. In this version of the device the owner has to wear an additional sensor which detects the distance between the owner and the device. The sensor can be sewn into the clothing, worn in a pocket, around the neck etc.

Advanced versions of the device could automatically send the parents a picture, taken at the time of the call, of the location where the call is answered.

In exceptional cases, a device could be made which has the option to receive calls from any telephone number.

The device's primary target group is children of ages 6-13, i. e. children in elementary school.

Another option is to produce versions of the device for the elderly, which would make it easier for them to establish contact with their children, medical doctors etc. Variant versions could also be produced which could be sold instead of regular mobile phones in countries with lower standards of living, due to their reduced price.

A brief description of the drawings The drawings which are included in the description and which constitute the description of the invention present some of the best ways the invention can be implemented and help explain the basic principles of the invention. fig. 1 is a sketch of a version of the device with the call-button dialing system, according to the one button-one telephone number principle * fig. 1a represents a side view of the device from fig. 1 * fig. 2 is a sketch of the device from fig. 1, which additionally includes a"silent"mode option and is intended to be worn around the neck * fig. 3 is a sketch of a version of the device with a rotational selector-switch dialing system 'fig. 4 is a sketch of a version of the device with a sliding selector-switch dialing system 'fig. 5 is a sketch of a version of the device with a pulse selector-switch dialing system * fig. 6 is a sketch of a second version of the device with a rotational selector-switch dialing system * fig. 7 is a sketch of a third version of the device with a rotational selector-switch dialing system * fig. 7a represents a side view of the mobile communications device from fig. 7 * fig. 8 is a sketch of a fourth version of the device with a rotational selctor-switch dialing system * fig. 8a represents a side view of the mobile communications device from fig. 8 * fig. 9 is a sketch of a version of the device with a strictly voice-dialing system 'fig. 10 is a sketch of a decorative heart-shaped casing comprising a mobile communications device from fig. 1 'fig. 11 is a sketch of a version of the device with a touch-screen selector dialing system 'fig. 12 is a sketch of a version of the device from fig. 3 which is intended to be worn around the wrist * fig. 13 is a sketch of a version of the device from fig. 5 which is intended to be attached to the user's belt * fig. 14 is a sketch of a version of the device from fig. 6 which is intended to be attached to the user's clothing by means of a safety pin or a Velcro strap A detailed description of the invention The following paragraphs will disclose the details of the preferred embodiments of the invention, which are shown in the accompanying drawings.

1. The embodiment with a call-button dialing system : According to figs. 1, 1 a and 2 it is evident that the mobile communications device consists of a front side of the casing 11 and a battery cap 12 which constitute the front and back sides of the device. Fig. 2 shows a version of the embodiment where the casing is in the shape of a pendant about 5 cm in diameter, wherein a silent mode on/off button 8 is located in the upper left corner of the front side of the casing and a button for disabling accidental calls 7 is located in the upper right corner of the front side of the casing.

Buttons number 2,3, 4,5 and 9 are used for dialing wherein each button represents a specific telephone number predetermined by the parent. Moreover, each of the aforementioned buttons numbered 2, 3,4, 5, and 9 has a signal light incorporated inside which flashes on and off when the specific number calls the user, and in case of a missed call the light remains on, thereby informing the user which of the numbers called him (because the cell phone can only be called from the same telephone numbers it can dial).

Therefore this mobile phone can only establish communication with five numbers, which the parent or guardian personally approves with the mobile communications company supplying the mobile phone.

A speaker 1 is located on the top end of the front side of the casing, and a microphone 10 is located on the bottom end of the front side of the casing. The device is intended to be worn around the neck in the form of a pendant on a necklace 6. When dialing a number the user presses the button for disabling accidental calls 7 and then presses the call-button (2,3, 4, 5, or 9) corresponding to the telephone number he wants to dial. To answer incoming calls the user also presses the button for disabling accidental calls 7. The electronic equipment necessary for making and answering telephone calls is located inside the casing. The device also enables the parents to view the location of the child.

2. The embodiment with a rotational selector-switch dialing system: Fig. 3 shows an embodiment of the invention incorporating a rotational selector-switch 13 for selecting numbers. This version of the embodiment is characterized by a dialing mechanism which consists of a switch 13 which can be rotated to select numbers. The parent, as above, determines the numbers which can be dialled by means of a contract with the telecommunications company, and these numbers are represented on the casing by signal lights no. 14. 1 to 14. 5 which are placed around the rotational selector switch. After placing the rotational selector switch 13 into the desired position, which represents the corresponding telephone number, the call is made by pressing the call button 15. The selector-switch 13 can also be placed into a neutral position 16, to prevent accidental dialing of numbers. In addition, the switch can be placed into"silent mode"position 17, whereby the sound is turned off and incoming calls are signalled by flashing of the signal light which corresponds to the number which is calling. In addition the signal lights denote missed calls, and remain lit until the number which called is dialled again. A speaker 1 is located on the top end of the front side of the casing, and a microphone 10 is located on the bottom end of the front side of the casing.

3. The embodiment with a sliding selector-switch dialing system: Fig. 4 shows an embodiment of the invention incorporating a sliding selector-switch 13 for selecting numbers. This version of the embodiment is characterized by a dialing mechanism which consists of a switch 13 which can be moved up or down to select number, or positions. The numbers which can be dialled are predetermined by a contract with the telecommunications company, and these numbers are represented on the casing by signal lights no. 14.1 to 14.5 which are placed on the front side of the casing, left of the sliding selector switch 13. After placing the sliding selector switch 13 into the desired position, which represents the corresponding telephone number, the call is made by pressing the call button 15. The selector-switch 13 can also be placed into a neutral position 16, to prevent accidental dialing of numbers.

In addition, the switch can be placed into"silent mode''position 17, whereby the sound is turned off and incoming calls are signalled by flashing of the signal light which corresponds to the number which is calling. In addition the signal lights denote missed calls, and remain lit until the number which called is dialled again. As above, a speaker 1 is located on the top end of the front side of the casing, and a microphone 10 is located on the bottom end of the front side of the casing.

4. The embodiment with a pulse selector-switch dialing system: Fig. 5 shows an embodiment of the invention incorporating a pulse selector-switch for selecting numbers.

This version of the embodiment is characterized by a dialing mechanism which consists of a switch 18 which can be pressed to dial numbers. Numbers are dialled by tapping and/or pressing the switch and combinations thereof. For example, one short tap dials one predetermined number, two short taps dial another predetermined number, three short taps dial a third predetermined number, and a long press dials a fourth predetermined number. Other combinations of taps and presses on the switch 18 are also possible. The numbers which can be dialled are represented on the casing by signal lights no. 14.1 to 14.4 which are placed around the pulse selector-switch. The number which is dialed by one short tap is represented by a single small light 14.1, the number which is dialled by two short taps is represented by two small lights 14. 2, the number which is dialled by three short taps is represented by three small lights 14.3, and the number which is dialled by a single long press is represented by a longer lightbulb 14.4. To access the pulse selctor-switch dialing the device must be activated by pressing the activation button 19.

Sound can be turned off by pressing the button 8, and incoming calls are signalled by flashing of the signal light no. 14.1 to 14.4 which corresponds to the number which is calling. In addition the signal lights no. 14.1 to 14.4 denote missed calls, and remain lit until the number which called is dialled again.

Additionally, the silent mode button 8 itself includes a signal light 8. 1 which shows whether the sound is turned off. As above, a speaker 1 is located on the top end of the front side of the casing, and a microphone 10 is located on the bottom end of the front side of the casing.

5. The embodiment with a rotational selector-switch dialing system (version 2. ) : Fig. 6 also shows an embodiment of the invention incorporating a rotational selector-switch for selecting numbers, but in this version the call button 15 is placed inside the slector 13. This version of the embodiment is characterized by a dialing mechanism which consists of a switch 13 which can be rotated to select numbers. The numbers which can be dialled are predetermined by a contract with the telecommunications company, and these numbers are represented on the casing by signal lights no. 14.1 to 14.5 which are placed around the rotational selector switch 13. After placing the rotational selector switch 13 into the desired position, which represents the corresponding telephone number (no. 14.1 to 14.4), the call is made by pressing the call button 15 which is located inside the rotational selector switch 13. The selector-switch 13 can also be placed into a neutral position 16, to prevent accidental dialing of numbers. In addition, the switch can be placed into"silent mode"position 17, whereby the sound is turned off and incoming calls are signalled by flashing of the signal light which corresponds to the number which is calling. In addition the signal lights denote missed calls, and remain lit until the number which called is dialled again. As above, a speaker 1 is located on the top end of the front side of the casing, and a microphone 10 is located on the bottom end of the front side of the casing.

6. The embodiment with a ring-shaped rotational selector-switch dialing system (version 3. ) : Fig 7. shows an embodiment of the invention with a rotational selector-switch for selecting numbers, the selector switch 20 being ring-shaped and placed around the central area 21.

This version of the embodiment is characterized by a dialing mechanism which consists of a central area 21 and a ring-shaped rotational selector-switch which can be rotated to select numbers. The numbers which can be dialled are predetermined by a contract with the telecommunications company, and these numbers are represented on the casing by signal lights no. 14.1 to 14.5 which are placed in a circle around the central area 21. Numbers are selected by rotating the ring 20 and placing the selection marker 22 into one of the positions marked by signal lights no. 14.1 to 14.4). After selecting a position, which represents the corresponding telephone number, the call is made by pressing the call button 15. The ring 20 can also be placed into a neutral position 16, to prevent accidental dialing of numbers. The ring 20 can be placed into"silent mode"position 17, whereby the sound is turned off and incoming calls are signalled by flashing of the signal light which corresponds to the number which is calling. In addition the signal lights denote missed calls, and remain lit until the number which called is dialled again. As above, a speaker 1 is located on the top end of the front side of the casing, and a microphone 10 is located on the bottom end of the front side of the casing.

7. The embodiment with a rotational selector-switch dialing system (version 4. ): Fig. 8 shows a fourth version of the device with a rotational selector-switch for selecting numbers. This version of the embodiment is characterized by a dialing mechanism which consists of a wheel 13 which can be rotated to select numbers. The numbers which can be dialled are predetermined by a contract with the telecommunications company, and these numbers are represented on the selector wheel 13 and marked with numbers (e. g. 1 to 5). By selecting the appropriate number on the selector wheel a number can be dialled by pressing the call button 15. The wheel 13 can also be placed into a neutral position 16, to prevent accidental dialing of numbers, orit can can be placed into"silent mode"position 17, whereby the sound is turned off. Incoming calls are then signalled only by flashing of the signal light (14.1 to 14.5 ) which corresponds to the number which is calling. Signal lights 14.1 to 14.5 are placed on the left and right sides of the selector wheel, wherein each light is marked by a number (e. g. 1-5) denoting the predetermined telephone number. In addition the signal lights denote missed calls, and remain lit until the number which called is dialled again. As above, a speaker 1 is located on the top end of the front side of the casing, and a microphone 10 is located on the bottom end of the front side of the casing.

8. The embodiment with a strictly voice-dialing system: Fig. 9 shows an embodiment of the invention with a voice-dialing system. This version of the embodiment is characterized by the absence of any dialing mechanism, the numbers being dialled by pressing the call button 15 and speaking the name corresponding to the predetermined number. Names are assigned to numbers by pressing the voice-dial programming button 24 and pressing the corresponding programming button 14.1 to 14.5 while simultaneously speaking the name we wish to assign to the number which the button represents. By pressing the button 17 the sound is turned off and incoming calls are then signalled only by flashing of the signal light which corresponds to the number which is calling.

Signal lights 14.1 to 14.5 are placed in a circle around the call button 15 and are a part of the programming buttons or are immediately next to them. The button used for turning sound on and off 8 also incorporates a signal light which indicates whther the sound is turned on or off. In addition the signal lights denote missed calls, and remain lit until the number which called is dialled again. As above, a speaker 1 is located on the top end of the front side of the casing, and a microphone 10 is located on the bottom end of the front side of the casing.

9. The embodiment with a touch-screen selector dialing system: Fig. 11 shows an embodiment of the invention with a touch-screen selctor for selecting numbers. This version of the embodiment is characterized by a dialing system which consists of a touch-sensitive touch- screen 29 which can be used to dial numbers by pressing on-screen panels representing the numbers 14.1 to 14.6. The numbers which can be dialled are predetermined by a contract with the telecommunications company, and these numbers are represented on the touch screen 29 and marked by panels 14.1 to 14.6.

Calls are made by pressing the call activation button 15 and pressing the appropriate on-screen panel 14.1 to 14. 6.

Sound can be turned off by pressing the silent mode button X, and incoming calls are signalled by flashing of the on-screen panel no. 14.1 to 14.6 which corresponds to the number that is calling. As above, a speaker 1 is located on the top end of the front side of the casing, and a microphone 10 is located on the bottom end of the front side of the casing.

Fig. 10 shows an embodiment of the invention as in fig. 1, and also shows that any of the disclosed versions of the device can be placed within a decorative casing 25, which can take various shapes.

All of the embodiments of the mobile phone disclosed in this invention can be carried or worn in one of the following ways: around the neck as a necklace with a pendant (fig. 2), around the wrist 26, like one would wear a wristwatch (fig. 12), attached to the belt 27 (fig. 13), or attached to the clothes 28 by means of a velcro strap or a safety pin (fig 14).

The disclosed embodiments show that this type of mobile communications device is an exceptionally useful and practical device which can be manufactured economically, and which includes significant improvements over the presently available devices. Various versions of this mobile device, intended for monitoring the child's movement and communication between parent and child or between children, can be devised on the basis of the disclosed embodiments without falling out of the spirit and scope of this invention.