The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 1994
Filed:
Feb. 07, 1992
Gilbert Colgate, Jr, New York, NY (US);
American Bank Note Holographics, Incorporated, New York, NY (US);
Abstract
An enhanced card security system wherein an optically readable portion is incorporated into the magnetic machine readable stripe on the card. The optically readable portion can include a holographic representation of a bar code or other conventionally known optical digit generator. The optical stripe has a partial string of an identification number and, the magnetic stripe has the remaining string of the identification number. A check digit derived by combining the two partial strings and preforming a check digit calculation on the complete string is also recorded on the magnetic stripe. Transactions are approved if during reading of the card the calculated check digit from combining the two strings matches the recorded check digit.