| 摘要 |
A method of effecting payment with a cash card that includes an electronic purse, such as a smart card that includes a chip and with which money can be deposited in said chip. When used for payment the card is read in a pay terminal, such as a cashpoint teller or automatic teller, and the payment sum is subtracted from the amount stored in the chip. The card includes data relating to a cash card number to which the card is tied. When the card is read in the cash card reader of a pay terminal the cash card number is read and is registered to enable a cash card transaction to be carried out, and the amount available on the chip is also read and registered. The pay terminal subtracts the amount concerned from the chip only when the chip contains an amount sufficient to cover the whole of the sum concerned and remains in the cash card reader for a period of time sufficient for the transaction to be carried out. The pay terminal then erases cash card number that was registered. The pay terminal is caused to carry out a conventional cash card transaction when the chip does not contain sufficient funds to cover the whole of the amount concerned, or if it is not left in the cash card reader for a sufficient length of time. |
