WIRELESS DEVICE MONITORING SYSTEM

摘要

A wireless device monitoring system includes a cellular phone (1) and an authenticating device (2). A controller (20) of the authenticating device (2) continuously and repeatedly perform distance detection processing based on a reception level of a received wireless signal, and authentication processing based on an authentication data included in the received wireless signal, at first communication intervals (T1) and second communication intervals (T2). When there exists no electronic device of an authenticated opposite party or when the electronic device of the authenticated opposite party is further than a prescribed threshold distance, an alarm signal is outputted or a prescribed control processing is performed. When a first communication time (11) for performing the distance detection processing is shorter than a second communication time (T12), the intervals are set to satisfy T1