| 摘要 |
PROBLEM TO BE SOLVED: To provide a customer card which attains customer management, including purchase history management by stores with respect to a large number of stores. SOLUTION: This IC card type customer card is issued to respective customers of the stores for the management of the customers. The customer card is provided with a common data area (11) which stores information common to the stores, plural individual data areas (12) which store purchase information of the respective stores, and a sensitivity data area (13) which stores information regarding the sensitivity of the customers, in its IC memory. |
