Patent ID: 8028899

Claim:
A method comprising: (a) operating at least one computer to determine that a user card is expected to be moved in a card slot of a cash dispensing automated banking machine, wherein the at least one computer is in operative connection with at least one signal emitter; wherein the at least one signal emitter is operative to output interference signals adapted to interfere with user card reading by an unauthorized card reading device; (b) responsive at least in part to the determination in step (a), operating the at least one computer to cause the at least one signal emitter to begin output of at least one interference signal; (c) subsequent to step (b), continuing output of the at least one interference signal while the user card is in the card slot; and (d) subsequent to step (c), operating the at least one computer to cause the at least one signal emitter to cease output of the at least one interference signal.