To provide an authentication device which enables a user who does not have a mobile phone, to use an authentication function using the mobile phone.
A computer 3 receives calling information from an interphone 2 (step S302). When the calling information is received, the computer 3 requests an interphone 2 to transmit second authentication data (step S303) and receives the second authentication data from the interphone 2 (step S306). Whether information (calling flag=1) of a mobile phone owner which can be called within information of a mobile phone owner, corresponding to the concerned second authentication data received, is registered in a second authentication table is determined (step S308). When the information of the mobile telephone owner which can be called is registered in the second authentication table, the user information (user name in the user column of the second authentication table), corresponding to the concerned second authentication data received, is transmitted to the concerned mobile telephone which can be called (step S309).
COPYRIGHT: (C)2007,JPO&INPIT
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Satoshi Muramatsu
Natsuki Goto
Hiroshi Ikeda
Hiroyasu Ninomiya