US Patent 8413894 Card with illuminated codes for use in secure transactions

A card for use in secure transactions includes a card body having a first major surface and a second major surface, the first major surface having a combination of a plurality of symbols disposed thereon. The card body has a plurality of LEDs disposed in connection with the plurality of preprinted symbols, individual ones of LEDs being disposed to identify respective individual ones of the plurality of symbols when illuminated. An LED controller is coupled to the plurality of LEDs and operable upon actuation to selectively illuminate individual ones of the plurality of LEDs to identify a sub-combination of the plurality of symbols, thereby providing an illuminated one-time code for use in a secure transaction.