IC CARD SYSTEM EMPLOYING REMOTE PIN ENTRY CARD

摘要

In an IC (integrated circuit) system, a first IC card owned by a cardholder and a second IC card owned by a person other than the cardholder are employed. The first IC card is a normal IC card having a memory for previously storing a personal identification number. The first IC card includes a comparator. The second IC card is a remote PIN entry card having a keyboard for entering the PIN by a cardholder. After the PIN has been entered by the cardholder in the remote PIN entry card, this card is loaded by the person into a card terminal. Then, the PIN entered in the remote PIN entry card is transferred into the card terminal, and thereafter the PIN of the card terminal is transferred into the IC card so as to identify whether the cardholder is an authorized cardholder or not by comparing in the comparator both the PIN's with each other.