Security for controlled access systems

Details Security for controlled access systems Security for controlled access systems

1996-07-03

1998-04-07

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082544, 379211, H04Q 100

Patent

active

057369321

ABSTRACT:
In order to gain access to a secured system, a user must be able to enter valid user identification information and must also have a remote wireless communication device such as a pager or cellular telephone having a number that is substantially unique to that user. When the user requests access to the secured system, the system places a call to the user's remote wireless communication device and sends that device revalidation information such as a random number generated by the secured system. The user must return the revalidation information to the secured system to gain access. In an alternative embodiment, another person (a user-approver) has the remote wireless communication device and must return the revalidation information to the secured system if the user-approver approves the user's request for access.

REFERENCES:
patent: 5321242 (1994-06-01), Heath
patent: 5347580 (1994-09-01), Molva
patent: 5363425 (1994-11-01), Mufti et al.
patent: 5367572 (1994-11-01), Weiss
patent: 5473689 (1995-12-01), Eberhard
patent: 5488358 (1996-01-01), Hamilton
patent: 5528231 (1996-06-01), Patarin

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