A method for applying promotion codes to a payment transaction using an input device in communication with a database is provided. The payment transaction includes a purchase made by a cardholder using a payment card over a payment card network. The method includes storing promotion data within the database...http://www.google.es/patents/US20090171778?utm_source=gb-gplus-sharePatente US20090171778 - METHODS AND SYSTEMS FOR APPLYING A REWARDS PROGRAM PROMOTION TO PAYMENT TRANSACTIONS
METHODS AND SYSTEMS FOR APPLYING A REWARDS PROGRAM PROMOTION TO PAYMENT ...
