A transponder-reader payment system includes a fob including a transponder, and a RFID reader for interrogating the transponder. The system may further include a payment device separate and distinct from the fob, but associated with payment account mutually shared with the fob. In exemplary operation, the fob identifying information, or the payment device information, may be presented to the RFID reader for completion of a transaction request. A process server may receive the transaction request and satisfy the transaction request in accordance with a predetermined payment criteria. The process server may additionally augment a rewards account based on fob or payment device usage, thereby incenting fob usage in one instance and payment device usage in the other.