ELECTRIC FIELD COMMUNICATION SECURITY SYSTEM, ELECTRIC FIELD COMMUNICATION SECURITY METHOD, AND ELECTRIC FIELD COMMUNICATION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a technology for preventing leakage of information being a security object in an electric field communication apparatus.;SOLUTION: Transmission of the security object information 6 from a second electric field communication apparatus 2 to the other electric field communication apparatuses requires receiving of an operation control signal 5 transmitted from a first electric field communication apparatus 1. Since the second electric field communication apparatus 2 transmits no security object information 6 in the absence of the first electric field communication apparatus 1, it is possible to prevent leakage of the security object information even when a third party acquires only the second electric field communication apparatus 2.;COPYRIGHT: (C)2007,JPO&INPIT