| 摘要 |
<p>Smart card transactions are described. Operations in which smart cards are replenished with pre-paid sums, even from scattered terminals (10) not connected to a host (20), may be made secure simply by storing in the smart card (40) the number of replenish operations that have been performed. A replenishment counter is provided therefor and incremented every time the card is replenished but not when the card is used for other purposes, such as paying for goods and services. This system is particularly suitable for the collective management of a number of canteens each provided with a plurality of replenishment terminals available to employees.</p> |
