| 摘要 |
A portable telephone is provided for making it possible for the portable telephone to associate terminal devices with each other for flexible access control less expensively and safely by means of the existing infrastructure and the terminal devices. The portable telephone (PT) is comprised of a short distance wireless communication unit (210) to carry out wireless communication with a key terminal device (KT), an ID associatingunit for associating an ID for the key terminal device (KT) with an ID for a service terminal device (ST), a PP and access table memory unit (240) for storing an access table made out by the ID associating unit, a judging unit (230) for judging whether or not the ID for the service terminal device (ST) associated with the key terminal device (KT) exists in the access table when the ID for the key terminal device (KT) is input, and a control unit (280) for controlling the short distance wireless communication (210) to transmit the held ID to the associated service terminal device (ST) in the case that the judging unit (230) judges that the ID exists in the access table.
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