| 摘要 |
<p>A system for issuing authentication data based on a specific time transmits authentication data formed sequentially with the lapse of time counted by a specific time generating device (6) from a reference computer (1) to intermediate-order computers (2A) as shown in the Figure. To the authentication data, the low-order computers (2A) and low-order computers (3A) add specific authentication data successively and transmit the resultant data to the lowest-order vending machines. A computer of the vending machine (5) adds specific data to the transmitted data, and generates and issues specific authentication data, and stores them in a prepaid card (20). At the same time, reversely to the above process, the specific authentication data are transmitted to the reference computer (1) and are lastly registered in the reference computer (1). When such an issued prepaid card (20) is used in a pachinko (pin-ball game) machine in a pachinko parlor affiliated to the reference computer (1), the pachinko machine reads the specific authentication data stored in the card, refers to the reference computer for the read data, and collates and authenticates it.</p> |
