| 摘要 |
PROBLEM TO BE SOLVED: To prevent unauthorized access to a computer system. SOLUTION: An authentication server 1 receives a log-in request to an internal network 9 from a first user and input of information for confirmation of the validity of the log-in request by a second user, and transmits electronic information containing the information for confirmation of the validity of the log-in request to a cellular phone 5 of the second user preliminarily conformed to the first user. COPYRIGHT: (C)2007,JPO&INPIT |
