Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent
1997-08-19
1999-10-26
Le, Thien M.
Registers
Systems controlled by data bearing records
Credit or identification card systems
235382, 235379, 455411, 380 23, G06K 500, G06F 1760
Patent
active
059712724
ABSTRACT:
A technique for secured personal identification numbers which cannot be readily detected by either observation or repeated trial attempts is disclosed. The secured personal identification number maintains the dual level security of a personal identification number or password without adding substantial complexity or an undesirable reduction in security. Moreover, the secured personal identification number of the present invention is readily applicable to any type of account which is accessed by entry of an account number and a personal identification number or password.
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AT&T Corp.
Cyr Daniel St.
Le Thien M.
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