| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an entry/recession management system and method, without previous store of information for unlocking a gate device in a token, and further controlling release of a lock in consideration of the order of unlocking the gate device. <P>SOLUTION: The gate device 2 stores reference gate information 24a, 24b showing a gate device 2 which has to be unlocked before a user manages to arrive at the gate device 2 to be unlocked. The user possesses an IC card 3, and the IC card 3 is provided with a log file storing the identification number of the unlocked gate device 2 in time series. The gate device 2 collates the contents of the log file stored in the IC card 3 with the reference gate information 24a or 24b, and controls unlocking of the gate device. Every time the gate device 2 is unlocked, the identification number of user's own machine is written to the log file of the IC card 3 possessed by the user. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
