Self verifying transaction card with disabling capability

Details Self verifying transaction card with disabling capability Self verifying transaction card with disabling capability

1991-05-17

1993-01-19

Shepperd, John W.

Registers

Systems controlled by data bearing records

Credit or identification card systems

235379, G06K 500

Patent

active

051809028

ABSTRACT:
A self verifying transaction card having a self contained keyboard or keypad for entering a personal identification code, a simplified verification display comprised of light emitting diodes (LED's) which light up in a pre-determined configuration for validation of a verification check, a non-volatile memory with a stored code, and a self contained power supply. The card further contains circuitry for comparison of an entry with the stored code, with a pre-determined successive number of improper entries serving to disable the card from further identification functions and transactions. Clock/calendar timer and a contained microprocessor or microcontroller cause the verification function to be disabled at the expiration date of the card. The clock/calendar timer also provides a basis for uniquely correlating the time and date of a transaction to a changing verification display. A proper verification configuration at the time of transaction is not determinable and fraudulent transactions by merchants are prevented. In one embodiment the LED display is modulated to blink rapidly to conserve energy and to optically transmit data from the card to a remote terminal.

REFERENCES:
patent: 4523087 (1985-06-01), Benton
patent: 4614861 (1986-09-01), Pavlov et al.
patent: 4697072 (1987-09-01), Kawana
patent: 4766293 (1988-08-01), Boston
patent: 4879455 (1989-11-01), Butterworth et al.
patent: 4998279 (1991-03-01), Weiss
patent: 5023908 (1991-06-01), Weiss
patent: 5034597 (1991-07-01), Atsumi et al.

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