| 摘要 |
PROBLEM TO BE SOLVED: To store and return a charge without the intervention of illegality and also to prevent the balance of a card from being affected even when communication abnormality takes place by performing temporary settlement not accompanied by the shifting of value information, waiting for a merchandise or service which are offered after the temporary settlement and performing a real settlement which shifts value information that performs the temporary settlement. SOLUTION: When a purchaser buys a merchandise that is sold by a vending machine 30, value stored in a payment card 1 is shifted to a receiving card 2. That is, that card 1 temporarily pays value corresponding to a merchandise cost at the time of performing transaction of a merchandise, the card 2 temporarily receives it and after that the merchandise is ejected. When merchandise ejection is successful, the values that undergo temporary payment and temporary reception are really paid and received, and when the merchandise ejection is not successful, a value that is temporarily paid is returned. Then, it is possible to prevent illegal squeezing of the merchandise and also to return a charge at the time of merchandise ejection failure. |
