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:
Dec. 09, 2014
Filed:
Mar. 06, 2009
Luke Jonathan Shepard, Palo Alto, CA (US);
William Chen, Palo Alto, CA (US);
Todd Perry, Palo Alto, CA (US);
Lev Popov, Palo Alto, CA (US);
Luke Jonathan Shepard, Palo Alto, CA (US);
William Chen, Palo Alto, CA (US);
Todd Perry, Palo Alto, CA (US);
Lev Popov, Palo Alto, CA (US);
Facebook, Inc., Menlo Park, CA (US);
Abstract
A social CAPTCHA is presented to authenticate a member of the social network. The social CAPTCHA includes one or more challenge questions based on information available in the social network, such as the user's activities and/or connections in the social network. The social information selected for the social CAPTCHA may be determined based on affinity scores associated with the member's connections, so that the challenge question relates to information that the user is more likely to be familiar with. A degree of difficulty of challenge questions may be determined and used for selecting the CAPTCHA based on a degree of suspicion.