A system and methods for the registration of new payment tool processing, reward program identification and other customer registration at the Point-of-Sale (POS), based on electronically linking consumers existing accounts for the purposes of payment, rewards, loyalty, marketing, discounts and or identification of a consumer. The new payment system or rewards program may be delivered through a new card, a mobile program, a wearable product, or any other potential device for collecting communicating or transmitting information used for the aforementioned purposes including running a new program.