| 摘要 |
A system for performing lock control of a working machine comprises a working machine and a management device which are connected via a communication network so as to be capable of mutual communication. The working machine comprises: a communication means (110, 130) for connecting to said management device via said communication network; a password storage means (146) for storing password information which is used for lock control; a used notification means which, if said password information has been used, transmits from said communication means (110, 130) via said communication network to said management device a used notification which specifies the fact that said password information has been used; and a rewriting means which, if new password information has been received from said management device via said communication network, rewrites said password information which is stored in said password storage means (146) to said new password information. The management device comprises: a communication means for connecting to said working machine via said communication network; a password generation means which generates said new password information if said used notification has been received from said working machine; and a password transmission means which transmits said new password information which has been generated from said communication means via said communication network to said working machine. |
