Auto-sequencing financial payment display card
View Patent ↗A payment card comprises a store of issuer-defined pre-generated cryptograms that are loaded only once into the Card by a perso-bureau or issuer. An on-board and autonomous electronic display of the personal account number (PAN), card verification value (CVV), or expiration date (EXP) is auto-sequenced through the stored cryptograms. Each value displayed to the user is unique, and useful in a financial transaction only once. The Card thus requires no changes in behavior on the part of the User, because the existing merchant infrastructure is already equipped to collect PAN+CVV+EXP data for user verification and transaction authorization.
1. The financial transaction system, comprising:
a first cryptoprocessor for using an algorithm to generate a table of cryptograms from a seed that are in an ordered series and that are unique and downloaded only once during personalization to a particular payment card;
a second cryptoprocessor for using said algorithm to produce a replicate table of cryptograms from said seed that will also be in said ordered series and that can be predicted to be visually displayed by said particular payment card in subsequent financial transactions;
a validation process for receiving a personal account number (PAN), a card verification value (CVV), and/or an expiration date (EXP) derived from individual cryptograms selected by an auto-sequencer and continuously displayed on said payment cards to a user;
a transaction decision process for approving or declining a financial transaction involving said payment card according to the validity of the PAN+CVV+EXP values received as determined by said replicate table of cryptograms; and
a personalization process for permanently recording said tables of cryptograms to a population of said payment cards,
wherein, only said table of cryptograms and not said algorithms and seeds are accessible to a personalization bureau outside a card issuer.