The master key management server who manages the master key which the locking and unlocking it can point the key

摘要

PROBLEM TO BE SOLVED: To reduce labor for utilizing a duplicate key by setting working conditions.;SOLUTION: After the duplicate key is issued, the duplicate key can be made valid or invalid at any timing. Thus, there is no need for issuing a new duplicate key each time working conditions to be desirably set for the duplicate key are changed. This reduces labor for utilizing the duplicate key by setting the working conditions.;COPYRIGHT: (C)2009,JPO&INPIT