| 摘要 |
PROBLEM TO BE SOLVED: To provide a card management device, a card encoder, and a prepaid card which facilitate card management and set works to improve the reliability. SOLUTION: The device is provided with a control means 11 which changes set contents by a set data read from an unused prepaid card, where set data and frequency data are recorded, by a card read/write part 18 and writes data including the residual frequency on the unused prepaid card by the card read/ write part 18 after reading data by the card read/write part 18 to obtain an ordinary prepaid card. |
