To provide a mobile terminal or the like for simply managing an image data file obtained by imaging in an intuitionally handled manner by a user.

A database means 5 stores a database wherein positional information, a district name and a facility name are cross-referenced with one another, when an electronic imaging means 2 carries out imaging by the operation of a key entry means 8, the database means 5 searches the database on the basis of positional information measured by a positioning means 7 at that time and particularizes the district name and the facility name at the imaging position. A control means 3 captures the image data outputted from the electronic imaging means 2, applies prescribed processing to the image data, attaches the particularized district name and facility name or the like as file names to the image data, and stores the result in a memory means 4 as an image data file. A desired image data file can be searched from the memory means 4 by using the imaging location such as the district name and the facility name for a keyword.