Device authentication system for on and off line use
First Claim
1. A system for authenticating a device, as a credit card, alternately involving a location terminal alone and such a terminal in association with a central station, wherein said card includes a machine-readable uniqueness characteristic with first and second aspects and a memory means, said system comprising:
- card sensing means at said location terminal to provide sensed signals representative of said first and second aspects of said uniqueness characteristic;
decoding means, for use in off-line and on-line authentication of said device, at said location terminal for decoding said memory to provide reference signals representative of said first aspect of said uniqueness characteristic;
correlator means at said location terminal for correlating said sensed signals representative of said first aspect with said reference signals representative of said first aspect to provide first approval signals;
means at said location terminal for completing a communication channel to said central station;
means, for use in on-line authentication of said device, at said central station for receiving said sensed signals representative of said second aspect of said uniqueness characteristic, correlating such signals to reference values and providing second approval signals; and
means at said location terminal controlled by said first and second approval signals to manifest authenticity of said card.
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Accused Products
Abstract
A verification system for cards or other devices with an anticounterfeit characteristic and an escort memory, wherein for lower or routine levels of security, the escort memory serves to confirm part of the anticounterfeit characteristic and for higher levels of security a central station memory is employed to confirm another part of the anticounterfeit characteristic. Distinction between levels of security is determined on the basis of time or other criteria imposed from the central station.
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Citations
11 Claims
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1. A system for authenticating a device, as a credit card, alternately involving a location terminal alone and such a terminal in association with a central station, wherein said card includes a machine-readable uniqueness characteristic with first and second aspects and a memory means, said system comprising:
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card sensing means at said location terminal to provide sensed signals representative of said first and second aspects of said uniqueness characteristic; decoding means, for use in off-line and on-line authentication of said device, at said location terminal for decoding said memory to provide reference signals representative of said first aspect of said uniqueness characteristic; correlator means at said location terminal for correlating said sensed signals representative of said first aspect with said reference signals representative of said first aspect to provide first approval signals; means at said location terminal for completing a communication channel to said central station; means, for use in on-line authentication of said device, at said central station for receiving said sensed signals representative of said second aspect of said uniqueness characteristic, correlating such signals to reference values and providing second approval signals; and means at said location terminal controlled by said first and second approval signals to manifest authenticity of said card. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification