Patent ID: 8104679

Claim:
A method for limiting card-not-present payment card fraud, comprising: loading individual table values with a sequence of next valid values to crypto-tables within a population of payment cards during manufacturing and before distribution to their corresponding users; equipping each said payment card with a user display, and a device to automatically fetch a next valid value in a sequence from said crypto-table to a dynamic portion of a new account number readable on said display each time such is used in a merchant transaction; providing a financial network for reporting said new account number by a user to a merchant when initiating a card-not-present merchant transaction; analyzing a report from said merchant to determine if said new account number includes an expected next valid value in said crypto-table that was loaded in that particular payment card during manufacturing and before distribution its user; logging a merchant identification data associated with each said report from said merchant into a database; and deciding whether to authorize said merchant transaction based on previous data logged into said database related to previous merchant transactions for said particular payment card.