PORTABLE ELECTRONIC DEVICE, POSITION CONFIRMATION METHOD, POSITION CONFIRMATION PROGRAM, AND POSITION CONFIRMATION SYSTEM

摘要

In one embodiment, a portable electronic device (e.g., a mobile telephone (1)) has a communication unit for performing short-range communication with a first device, and a controller for notifying a user when short-range communication with the first device is not possible. For example, the mobile telephone (1) controls a communication unit (6) or a similar element to search another device in a short-range communication area, and when another device can be detected in the short-range communication area as a result of the search, notifies the user of the fact.