TERMINAL SECURITY PROTECTIVE DEVICE, TERMINAL SECURITY PROTECTIVE METHOD, AND TERMINAL SECURITY PROTECTIVE PROGRAM

摘要

An interoperability confirming section (114) judges whether or not a terminal (100) is out of PAN by confirming interoperability with another terminal at regular intervals through the PAN. If the terminal is judged to be out of the PAN, the interoperability confirming section (114) deduces that the terminal may be theft and falsely used and starts a security lock function stored in a security information storage section (112). If an interoperability confirmation response section (113) responds to the interoperability confirmation through the PAN from the another terminal, the interoperability confirmation section (114) resets and re-starts a periodic monitoring timer (115) used for constant period measurement assuming that interoperability is confirmed.