DATA PROCESSING SYSTEM USING IC CARD

摘要

PURPOSE:To utilize a data storage area of an IC card as effectively as possible and to secure the security of stored data between subjects for sharing the storage area in the case of sharing the data storage area of each IC card by plural subjects in a data processing system utilizing IC cards. CONSTITUTION:Each IC card 9 has the 1st storage area 125 for storing data relating to each of plural subjects and the 2nd storage area 123 for storing the identification(ID) code of the subject relating to each of the data stored in the 1st storage area 125. Both of reading right and writing right from/in the 1st and 2nd storage areas 125, 123 are unlocked to a center device in the system. However only the reading right of the 1st storage area 125 is unlocked to a terminal equipment to be used by each subject and both of the reading and writing right of the 2nd storage area 123 are unlocked.