AUTOMATED BANKING MACHINE THAT OUTPUTS INTERFERENCE SIGNALS THAT JAM READING ABILITY OF UNAUTHORIZED CARD READER DEVICES

A cash dispensing automated banking machine includes a card reader associated with a card slot. An anti-fraud sensing device is able to sense ambient light or generated radiation that passes to the sensing device through the card reader slot. The installation of an unauthorized card reading device on the machine changes at least one property sensed by the sensing device. A controller in the machine receives signals from the sensing device, and determines if an unauthorized card reading device has been installed.