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Lineup Photo-Based Authentication Using Social Networks Sarita - PowerPoint PPT Presentation

Lineup Photo-Based Authentication Using Social Networks Sarita Yardi, Nick Feamster, Amy Bruckman Georgia Institute of Technology {yardi,feamster,asb}@cc.gatech.edu Lineup WOSN Aug 18, 2008 Lineup WOSN Aug 18, 2008 Lineup WOSN Aug


  1. Lineup Photo-Based Authentication Using Social Networks Sarita Yardi, Nick Feamster, Amy Bruckman Georgia Institute of Technology {yardi,feamster,asb}@cc.gatech.edu Lineup WOSN  Aug 18, 2008

  2. Lineup WOSN  Aug 18, 2008

  3. Lineup WOSN  Aug 18, 2008

  4. Problem: Access control Lineup WOSN  Aug 18, 2008

  5. Our Approach: Lineup  User sets access control  Client requests authentication  System selects one or more photos  System generates a “solution”  System presents test to user  User identifies subjects in photo  User is authenticated Lineup WOSN  Aug 18, 2008

  6. Key Idea #1: Captchas Lineup WOSN  Aug 18, 2008

  7. Key Idea #3: Peer to Peer Authentication Lineup WOSN  Aug 18, 2008

  8. Key Idea #3: Crowdsourcing Lineup WOSN  Aug 18, 2008

  9. User embeds widget User sets privacy level Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted Lineup WOSN  Aug 18, 2008

  10. Lineup high User embeds widget User sets privacy level low Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted Lineup WOSN  Aug 18, 2008

  11. Lineup User embeds widget User sets privacy level Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted Lineup WOSN  Aug 18, 2008

  12. Lineup User embeds widget User sets privacy level Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted Lineup WOSN  Aug 18, 2008

  13. Lineup User embeds widget User sets privacy level Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted Lineup WOSN  Aug 18, 2008

  14. Key Idea #4: Trust Lineup WOSN  Aug 18, 2008

  15. Challenges: Security Lineup WOSN  Aug 18, 2008

  16. Future Directions Lineup WOSN  Aug 18, 2008

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