Transaction card and methods and apparatus therefor
First Claim
1. A transaction card carrying encrypted information for verification that the card has not been forged, comprising:
- a card stock;
a magnetic stripe storing account number information and public key referencing information;
a printed or embossed account number representing the account number information; and
a barcode representative of a private key encrypted representation of the account number information for an authorized account, whereby the barcode may be read and decrypted using the public key and compared with the account number derived from the magnetic stripe to determine whether the contents of the magnetic stripe has been forged.
1 Assignment
0 Petitions
Accused Products
Abstract
A transaction card carrying encrypted information for verifying that the card has not been forged comprises a card stock, a magnetic stripe storing account information, a printed or embossed account number and a barcode. It is possible, using conventional point-of-sale terminal equipment and magnetic stripe reading and barcode scanning hardware, to determine whether the account information on the transaction card has been forged. This is done by extracting the account number from the magnetic stripe using a magnetic stripe reader or by entering it manually, decrypting the information stored on the barcode and comparing the decrypted information to a representation of the account number information.
142 Citations
15 Claims
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1. A transaction card carrying encrypted information for verification that the card has not been forged, comprising:
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a card stock;
a magnetic stripe storing account number information and public key referencing information;
a printed or embossed account number representing the account number information; and
a barcode representative of a private key encrypted representation of the account number information for an authorized account, whereby the barcode may be read and decrypted using the public key and compared with the account number derived from the magnetic stripe to determine whether the contents of the magnetic stripe has been forged. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of determining whether account information on a transaction card has been forged comprising:
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presenting a transaction card having a magnetic stripe having account number information and a barcode having private key encrypted account number information thereon to a magnetic stripe reader;
extracting the account number information from the magnetic stripe;
decrypting the private key encrypted account number information stored in the barcode; and
comparing the decrypted account number information to a representation of the account number information to determine whether the account number information is legitimate or forged. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. Apparatus for determining whether account information on a transaction card is legitimate or forged, comprising:
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a magnetic stripe reader for generating a magnetic stripe signal indicative of account information and public key referencing information derived from a magnetic stripe of the transaction card;
a barcode reader for developing a barcode signal indicative of private key encrypted account number information stored on a barcode on the transaction card;
a decrypter using a public key referenced by the public key referencing information for decrypting the private key encrypted information to yield a decrypted barcode value; and
a comparator for comparing a representation of the account number derived from the magnetic stripe or printed or embossed on the transaction card with the decrypted barcode value to determine whether the account number is legitimate or forged.
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Specification