| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce operation necessary for a user when performing user authentication using his or her own communication instrument. <P>SOLUTION: A user authentication system is constituted such that call sections 4d, 5d, 6d, upon reception of a user ID, acquire a unique ID corresponding to the user ID by using use user ID correspondence lists 4b, 5b, 6b, respectively, call a user side communication instruments 11 corresponding to the user ID using the acquired unique ID via system side communication instruments 13, 14, 15, and when an incoming call section 11b of the user side communication instrument 11 sends back an incoming-call response based on a response for the incoming call by the user 1, the call sections 4d, 5d, 6d receive the incoming-call response via the system side communication instruments 13, 14, 15 to perform user authentication. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
