| 摘要 |
PURPOSE:To prevent the forgery of cards by applying the information or a marker indicating the invalid state to a spent card, and invalidating a memory medium. CONSTITUTION:The information necessary for a playing guest such as the usable area, i.e., game hall name HALL, purchase amount AM, card inserting direction DIR, and the date of issue DATE, and the issuance serial number (n) required for recovering a broken card are printed on the surface of a card CD. When the purchase amount is spent up and the number of balls in possession becomes 0, the card invalid state INV such as an X mark is printed. When the card CD is deposited into the card insertion port of a reckoning machine 300, the card number is read out and sent to a control device 400, the card data are received, and the unpurchased amount is displayed. When such information is received that the number of balls in possession and the unpurchased amount are O, the invalid display INV is displayed by a marking device, and the card CD is recovered into a card recovering tank. |
