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:
Sep. 23, 2014
Filed:
Nov. 13, 2008
Bjorn Markus Jakobsson, Mountain View, CA (US);
Jessica N. Staddon, Redwood City, CA (US);
Philippe J. P. Golle, San Francisco, CA (US);
Richard Chow, Sunnyvale, CA (US);
Bjorn Markus Jakobsson, Mountain View, CA (US);
Jessica N. Staddon, Redwood City, CA (US);
Philippe J. P. Golle, San Francisco, CA (US);
Richard Chow, Sunnyvale, CA (US);
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Abstract
One embodiment of the present invention provides a system for authenticating a user. During operation, the system records user behavior history at one or more devices associated with the user. The system then extracts user information associated with a place and/or an activity from the recorded user behavior history. The system further generates one or more challenges based on the extracted user information, thereby facilitating the verification of the user's identity.