The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1999
Filed:
Mar. 29, 1996
Applicant:
Inventor:
Michael B Powell, Tucson, AZ (US);
Assignee:
Authentix Network, Inc., Tucson, AZ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q / ;
U.S. Cl.
CPC ...
455410 ; 455411 ; 455403 ; 455432 ;
Abstract
A method of identifying the fraudulent use of a cellular telephone includes the step of identifying an initial call made from the cellular telephone. An automated challenge-response authentication operation is then executed with a rotating subscriber query, resulting in a first authentication failure. In response to the first authentication failure, an operator assisted escalated challenge-response authentication operation is performed with a rotating subscriber query to generate a second authentication failure, indicating the fraudulent use of the cellular telephone.