User equipment, communication equipment, authentication system, authentication method, authentication program and recording medium

A user equipment for performing post-authentication communication with a communication equipment after personal authentication of a user, the user equipment comprising:

• an authentication unit for performing the personal authentication of the user;
• a communication unit for communicating with the communication equipment by bringing the user equipment in proximity to the communication equipment;
• a communication equipment ID storage unit for storing first communication equipment identifying information;
• an authentication control unit for
• receiving the first communication equipment identifying information from the communication equipment connected to the communication unit,
• storing the first communication equipment identifying information into the communication equipment ID storage unit, and
• permitting the authentication unit to execute the personal authentication of the user after receiving the first communication equipment identifying information;
• and
• a post-authentication communication control unit for receiving second communication equipment identifying information identifying the communication equipment from the communication equipment connected to the communication unit within a first predetermined time after the authentication unit succeeds in the personal authentication of the user, and for permitting post-authentication communication only when the second communication equipment identifying information matches the first communication equipment identifying information,
• wherein the authentication control unit permits the authentication unit to receive authentication information input by the user and to execute the personal authentication of the user for a second predetermined time after receiving the first communication equipment identifying information,
• wherein the communication unit is disconnected from the communication equipment during the execution of the personal authentication of the user.