PORTABLE TERMINAL AND ITS CONTROL METHOD, AND IC CARD

摘要

PROBLEM TO BE SOLVED: To efficiently control the right to access each application allocated to a memory area of an IC card. SOLUTION: By introducing a hierarchical structure to memory areas on the IC card, respective applications allocated to the memory areas are registered in directories, and the memory areas are managed by directories. Password codes are set for every application and directory and the right to access is controlled in the application units and directory units. If a portable terminal is lost, the right to access the applications in the IC card is automatically lost.