Magnetic card processor with improved fraud resistance

Details Magnetic card processor with improved fraud resistance Magnetic card processor with improved fraud resistance

2008-05-27

2008-05-27

Nguyen, Tu T. (Department: 4122)

Registers

Coded record sensors

Particular sensor structure

C235S450000

Reexamination Certificate

active

07377434

ABSTRACT:
A card processor which can substantially reliably prevent magnetic data recorded in a magnetic card and can remarkably enhance security. In the card processor, two radiation sources radiate disturbing magnetic fields outside of an insertion slot. A disturbing magnetic field radiated from one radiation source and a disturbing magnetic field radiated from the other radiation source have different frequencies and intensities. Accordingly, even when a differential head is located at such a position as to be influenced by the disturbing magnetic fields, it is substantially impossible to attain such balance adjustment as to eliminate the influences of the disturbing magnetic fields.

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patent: 6390367 (2002-05-01), Doig
patent: 6422475 (2002-07-01), May
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patent: 2004/0026507 (2004-02-01), Nagata
patent: 1 422 654 (2004-05-01), None
patent: 2001-067524 (2001-03-01), None
Svigals, J., “Unauthorized Card Stripe Reading Inhibitor”, IBM Technical Disclosure Bulletin, IBM Corp., New York, USA vol. 26, No. 6, Nov. 1, 1983.

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