Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent
1990-01-16
1992-07-14
Levy, Stuart S.
Registers
Systems controlled by data bearing records
Credit or identification card systems
235379, 902 2, 902 5, 380 24, 380 50, G06K 500, G06K 1530, G06K 900, H04K 100
Patent
active
051305194
ABSTRACT:
A portable Personal Identification Card allows a cardholder to enter a PIN code into his card at a location remote from an authorization terminal. In an alternate embodiment, a PIN code may be enterd at the authorization terminal. The authorization terminal reads the cardholder's account number from the PIN card. The account number is transmitted to a central computer which uses this number to index into memory to find a personal identification number and encryption parameters. The centerl computer transmits a pseudo-random number to the PIN Card. Both the PIN Card and the central computer perform an encryption of a function of the corresponding personal indentification number and pseudo-random number to derive a CGIPIN (Computer Generated Image of the PIN). If the CGIPIN transmitted from the PIN card matches the CGIPIN of the central computer, access is authorized.
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Belfield Robert
Bush George
Ross Estelle
Bush George
Glembocki Christopher R.
Levy Stuart S.
Ross Estelle
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