| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to execute credit paying processing plural times by one time of reading of a credit card and one time of inquiry to a master equipment. SOLUTION: Credit data answered from a master equipment 100 after the execution of credit paying processing can be updated by reflecting the contents of the current credit paying processing, the updated credit data are formed so as to be written in a rewritten card by a readable code through a scanner 15 and credit paying processing can be executed by using credit data read out from the rewritten card by the scanner 15, so that credit paying processing can be executed plural times through the rewritten card and one inquiry to the master equipment 100. |
