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Leonidas P Pavlov, Nabil M Aba Jbara: Unitary, self-contained card verification and validation system and method. Intellicard International, William W Cochran II, September 30, 1986: US04614861 (694 worldwide citation)

A unitary, self-contained card (10) which does not require interaction with a fixed terminal device to prevent monitoring of confidential information contained within the card (10). The unitary, self-contained card (10) has the ability to verify a personal identification number (PIN) which is entere ...


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Pavlov Leonidas Pierre, Aba Jbara Nabil M: A unitary, self-contained card verification and validation system and method. Intellicard International, CARSON W Scott, May 22, 1986: WO/1986/003040

A unitary, self-contained card (10) which does not require interaction with a fixed terminal device to prevent monitoring of confidential information contained within the card (10). The unitary, self-contained card (10) has the ability to verify a personal identification number (PIN) which is entere ...