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.
Many credit card issuers, particularly those in the United Kingdom and United States, run programs to encourage use of the card where the card holder is given points, frequent flyer miles or a monetary amount. This last benefit, a monetary amount, is usually known as cashback or cash back reward.