Enhancement of chip card security
AssigneeAmerican Bank Note Holographics, Inc.
InventorGilbert Colgate, Jr.
Life of this patent
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Abstract
A chip card, such as a financial transaction card, having first identifying data written in a read-only memory portion of circuitry contained in the card, wherein second and third identifying data are respectively coded in a machine readable optically variable device (e.g., a hologram) and a magnetic stripe on the card. The authenticity of the card is verified by combining these different identifying data; for example, the second and third identifying data may be combined to produce an algorithm which is compared with the first identifying data for authentication of the card.
Claims13
A method of enhancing the security of a chip card that contains an integrated circuit including a changeable memory and a write once/read only memory, said method comprising
- (a) writing first identifying data in said write once/read only memory;
- (b) establishing, on an external surface of the card, an optically readable portion comprising a machine readable optically variable device having coded thereon second identifying data;
- and
- (c) establishing, on an external surface of the card, a magnetic stripe having coded therein third identifying data;
- said first, second and third identifying data being combinable to verify the authenticity of the card to the integrated circuit.
A method of enhancing the security of a chip card that contains an integrated circuit including a changeable memory and a write once/read only memory, said method comprising
- (a) writing first identifying data in said write once/read only memory and
- (b) establishing, on an external surface of the card, an optically readable portion comprising a machine readable optically variable device having coded thereon second identifying data combinable with said first identifying data to verify the authenticity of the card to the integrated circuit.
A chip card comprising:
- (a) a card body;
- (b) an integrated circuit mounted within the card body and including a changeable memory and a write once-read only memory having first identifying data written therein;
- (c) an optically readable portion comprising a machine readable optically variable device on an external surface of the card, having coded thereon second identifying data;
- and
- (d) a magnetic stripe on an external surface of the card having coded therein third identifying data;
- said first, second and third identifying data being combinable to verify the authenticity of the card to the integrated circuit.
A chip card comprising:
- (a) a card body;
- (b) an integrated circuit mounted within the card body and including a changeable memory and a write once/read only memory having first identifying data written therein;
- and
- (c) an optically readable portion comprising a machine readable optically variable device on an external surface of the card, having coded thereon second identifying data combinable with said first identifying data by a procedure to verify the authenticity of the card to the integrated circuit.
Dependencies are inferred from the claim text.