Browse Prior Art Database

Unauthorized Card Stripe Reading Inhibitor

IP.com Disclosure Number: IPCOM000047337D
Original Publication Date: 1983-Nov-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Svigals, J: AUTHOR

Abstract

Several techniques are disclosed to discourage or prevent the unauthorized attachment of a magnetic stripe reading device in front of the card slot of a card reader in a terminal, such as an automatic teller machine. An unauthorized reading device may be expected to include a fine pair of signal wires leading to the unauthorized user or a radio frequency transmitter to transmit the unauthorized signal to the fraudulent person. The card reader may be mechanically designed to discourage unauthorized stripe reading. For example, the card reader may be designed to receive the card perpendicular to the stripe so as to make unauthorized scanning of the stripe difficult. Alternately, the card transport may be designed to substantially change the plane of the card as it is being received.

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Unauthorized Card Stripe Reading Inhibitor

Several techniques are disclosed to discourage or prevent the unauthorized attachment of a magnetic stripe reading device in front of the card slot of a card reader in a terminal, such as an automatic teller machine. An unauthorized reading device may be expected to include a fine pair of signal wires leading to the unauthorized user or a radio frequency transmitter to transmit the unauthorized signal to the fraudulent person. The card reader may be mechanically designed to discourage unauthorized stripe reading. For example, the card reader may be designed to receive the card perpendicular to the stripe so as to make unauthorized scanning of the stripe difficult. Alternately, the card transport may be designed to substantially change the plane of the card as it is being received. Changing the plane of the card, for example, dropping the card a substantial distance, will prevent an unauthorized magnetic read head from being mounted close enough to the stripe to pick up signals as the card is drawn into the card reader. A third design example is to provide a sharp ledge on the card read bezel. The sharp ledge would not provide a convenient attachment surface for the unauthorized card reading device. A fourth example would be to transport the card into the card reader with intermittent motion to inhibit correct reading of the stripe content. Unauthorized stripe reading devices may also be inhibited by electrical means. For...