Limiting Access to Data in an Identification Card Having a Microprocessor
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
This article improves the security of chip cards. Chip cards are credit cards or other identification cards which have an integral integrated circuit chip containing processor logic and memory. The improvement requires that the card holder enter the personal security or secret number for each and every transaction. Ever since the advent of monolithic circuit chips, there have been various suggestions to mount one or more of these chips onto an identification card so as to provide storage and logic which is more secure and has greater storage capacity than the storage provided by the three magnetic tracks currently embodied in credit card standards.