US Patent 9805384 Method and system for payment card linked offer generation

A method for discounting a payment transaction include: storing, in a memory, transaction data for a payment transaction, wherein the transaction data includes at least a transaction amount; receiving, by a receiving device, payment data associated with a payment account, wherein the payment data includes at least a payment account number; receiving, by the receiving device, offer data, wherein the offer data includes an offer identifier associated with the payment account and a transaction modifier; encrypting, using a predetermined encryption key, at least a portion of the payment account number to obtain an encrypted account number; and updating, in the memory, the transaction amount included in the transaction data based on the transaction modifier if the encrypted account number corresponds to the offer identifier.