LOG-IN AUTHENTICATION METHOD, LOG-IN AUTHENTICATION SERVER, AND LOG-IN AUTHENTICATION PROGRAM

PROBLEM TO BE SOLVED: To provide a log-in authentication system for quickly performing log-in by reducing the labor of an input operation. SOLUTION: In a log-in authentication system, a server 4 creates a password based on device information unique to a log-in input operation device 2 received with a log-in request from a log-in input operation device 2 by associating it with the device information (S4), and transmits the password to the log-in input operation device 2 (S5), and receives the password from the portable terminal 3 with the terminal information of the portable terminal 3 (S10), and determines whether or not the received terminal information is matched with preliminarily registered terminal information (S11), and determines whether or not the received password is matched with the password (S12), and when the received password is matched with the generated password, notifies the log-in input operation device 2 specified by the device information associated with the created password of an authentication result showing that authentication has succeeded(S13). COPYRIGHT: (C)2009,JPO&INPIT