| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile terminal device and terminal identification information in which security or privacy of a user can be ensured in a short-range radio communication system. SOLUTION: When performing wireless LAN communication between an AP 2 that is a terminal device installed in a shop 1 and a mobile terminal 3, each time the mobile terminal 3 accesses the AP 2, a MAC address that is terminal identification information is changed. Namely, in visiting the same shop 1, the MAC address in wireless LAN connection is changed on a first visit and on a second visit. Thus, in the shop 1, it can not be confirmed from a sequence of wireless LAN connection if a visitor of the first visit is identical to a visitor of the second visit. COPYRIGHT: (C)2007,JPO&INPIT
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