Lamarr and Anthiel received a patent in 1941, but the enormous significance of their invention was not realized until decades later. It was first implemented on naval ships during the Cuban Missile Crisis and subsequently emerged in numerous military applications.
Cash back credit card reward programs started out rather simply, offering a flat percentage rate (typically 1 percent of purchases) rebated back to the customer in the form of a check at the end of the year or a statement credit.
Card Details. The Amazon.com Rewards Visa Card is a straightforward cash back card, which earns users a rebate on all their purchases. Cardholders get 3% back for purchases made at Amazon.com, 2% cash back at gas stations, restaurants and drugstores, and 1% back on all other purchases.