FORGED CARD USE PREVENTING METHOD, CARD READER/WRITER AND FORGED CARD USE PREVENTING SYSTEM

摘要

PROBLEM TO BE SOLVED: To make difficult the use of forged card without performing any real-time communication with center equipment and any high-level enciphering inside the card. SOLUTION: When an IC card is used, an ID retrieving means 122 of card reader/writer investigates whether the ID of card is registered on a black list stored in a storage device 130 or not and when that ID is registered, it is discriminated as a forged card. Besides, a certifying means 123 communicates with the card to certify the card and when the card is not certified, it is discriminated as a forged card. A communicating means 124 performs non-real-time communication with center equipment, transmits card information to center equipment and receives the ID to be added to the black list from the center equipment.