PORTABLE COMMUNICATION TERMINAL, APPROACH NOTIFICATION PROGRAM, AND APPROACH NOTIFICATION METHOD

摘要

PROBLEM TO BE SOLVED: To make an appropriate notification of an approach of a person who carries a communication device or a vehicle equipped with the communication device by highly precisely detecting the approach of the person who carries the communication device or the vehicle equipped with the communication device.;SOLUTION: A mobile phone 10 includes an earphone jack 24 into which an earphone plug is inserted and a short-range radio communication circuit 44 of Wi-Fi system to establish short-range radio communication with a peripheral communication device. When the plug is inserted into the earphone jack 24, a communication device present in the surroundings is searched. When a communication device is found, a reception radio wave level is acquired and, on the basis of variations in the reception radio wave level, an approach of a person who carries the communication device is determined. When the approach is determined, an alert state is determined based on a traveling speed and distance of the person who carries the communication device, and a notification is made according to the alert state.;COPYRIGHT: (C)2013,JPO&INPIT