Magnetic card protection system

Details Magnetic card protection system Magnetic card protection system

1988-04-18

1989-07-25

Nimmo, Morris H.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

150147, H05K 900

Patent

active

048516104

ABSTRACT:
A protective device for protecting the information on magnetically encoded areas of plastic cards comprising strips of a ferro-magnetic amorphous composition having a metal-glass characteristic situated adjacent and covering the magnetically encoded areas on either side so as to redirect any corrupting electromagnetic and statomagnetic fields. In a preferred embodiment, the protective strips are incorporated in a card holding unit.

REFERENCES:
patent: 4141400 (1979-02-01), Mangan
patent: 4438164 (1984-03-01), Pfeifer et al.
patent: 4450955 (1984-05-01), Featherston
patent: 4514586 (1985-04-01), Waggoner
patent: 4593736 (1986-06-01), Morita
patent: 4647714 (1987-03-01), Goto
Waters, C. T.; Shielded Carrier for Encoded Badges; IBM Technical Disclosure Bulletin; vol. 18, No. 5, Oct. 1975, p. 1328.

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