Graphical password authentication based on pixel differences

Electrical computers and digital processing systems: support – System access control based on user identification by... – Pin/password generator device

Reexamination Certificate

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C726S005000

Reexamination Certificate

active

08055905

ABSTRACT:
A password, unknown to a user to be authenticated by the password, is created by comparing an image provided by the user to a master image. Random differences between the images are found and used to create the password. The password is then validated to determine whether the user is authorized and/or to determine whether a communication provided by the user is to be processed.

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