Method and system of display validation through varying...

Details Method and system of display validation through varying... Method and system of display validation through varying...

2006-01-19

2009-12-22

Pham, Toan N (Department: 2612)

Communications: electrical

Selective

Intelligence comparison for controlling

C340S005210, C340S005300, C340S691600, C713S182000

Reexamination Certificate

active

07636029

ABSTRACT:
Users of the system are each provided with an indicator module capable of presenting a display. An authorization module keeps track of which users are authorized to access a facility, such as a secured area or a parking facility. The authorization module sends messages, such as SMS messages, to the authorized indicator modules directing them to present a common valid display. The common valid display changes repeatedly over time, but, at any one time, the modules of authorized users all present the same display. A user may be granted or denied access based on whether the display on his module is the same as that of known authorized modules.

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