| 摘要 |
PROBLEM TO BE SOLVED: To carry out proper utilization management under high security by internally managing the money control by means of a computer by excluding the gold-note characteristic of prepaid cards, so that the forging can be reduced by the difficulty of forging and the reduction in the gain due to vice. SOLUTION: A utilization certificate UC provided both with a bar code BA and with an issuing time magnetic disk memory MD is issured in place of a prepaid card, and the accounts corresponding to the respective utilization certificates UC to be issured on the file F of a personal computer are opened. A user can receive the supply of advanced balls within the range of the remainder of his account by inserting his utilization certificate UC into the slot hole 40 that has been provided to the side of each game machine P. Even if the forging of the utilization certificate UC is tried, the gain due to vice stops at most only within the range of the remainder of others' account, and the loss of a card company can be relatively reduced. |
