Patent ID: 7642896

Claim:
A locking system for a game machine comprising: an IC tag for locking operation; an IC tag for monitoring opening/closing operation; an IC tag monitoring device that communicates with the IC tag for locking operation and the IC tag for monitoring opening/closing operation; and a locking device that locks and unlocks a device based on a result of monitoring made by the IC tag monitoring device, wherein said IC tag for locking operation stores identification data that is used for distinguishing the IC tag for locking operation from other IC tags, wherein said IC tag for monitoring opening/closing operation stores identification data that is used for distinguishing the IC tag for monitoring opening/closing operation from other IC tags, wherein said IC tag monitoring device includes (1) a first transmission means for transmitting a calling wave for calling said IC tag for locking operation, (2) a first reception means for receiving a reflected wave returned from said IC tag for locking operation, (3) an antenna for key that is connected to said first transmission means and said first reception means, (4) key determination means for determining proper reception of the reflected wave containing identification data within a specified period of time since the transmission of the calling wave by the first transmission means and proper comparison of identification data of the reflected wave to data registered beforehand, (5) a first output means for outputting the result of key determination made by the key determination means and key monitoring history data to the outside, (6) a second transmission means for transmitting a calling wave for calling said IC tag for monitoring opening/closing operation, (7) a second reception means for receiving a reflected wave returned from said IC tag for monitoring opening/closing operation, (8) an antenna for monitoring connected to said second transmission means and said second reception means, (9) an opening/closing operation determination means for determining proper reception by the second reception means, of the reflected wave, through comparison of the identification data of the reflected wave to data registered beforehand, and (10) a second output means for outputting history data of monitoring opening/closing operation containing result of opening/closing operation determination by the opening/closing operation determination means to the outside, wherein said key monitoring history data comprises at least one of a key insertion time, a key withdrawal time, and a key ID abnormal time, and wherein said locking device comprises a key including said IC tag for locking operation and a lock that includes said antenna for key and into which said key is to be inserted.