| 摘要 |
PROBLEM TO BE SOLVED: To make it useful for various control such as the checking of a fraud by writing game machine information on medals, and grasping the difference between IN medals and OUT medals for each game machine and the number of medals inserted into a medal exchanger. SOLUTION: The game medal is made markable by a marking means and readable by a marking reading means. The marking means and the marking reading means are provided on a passage from the insertion of medals into the game machine to the delivery of the medals. The marking means marks the inherent game machine information different for each game machine on the medals, and the marking reading means reads the inherent game machine information for each game machine.
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