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

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

Jul 20, 2023 471 likes •648 views

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

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WOSN  Aug 18, 2008

Photo-Based Authentication Using Social Networks

Sarita Yardi, Nick Feamster, Amy Bruckman Georgia Institute of Technology {yardi,feamster,asb}@cc.gatech.edu

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WOSN  Aug 18, 2008

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WOSN  Aug 18, 2008

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WOSN  Aug 18, 2008

Problem: Access control

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WOSN  Aug 18, 2008

 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 Our Approach: Lineup

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WOSN  Aug 18, 2008

Key Idea #1: Captchas

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WOSN  Aug 18, 2008

Key Idea #3: Peer to Peer Authentication

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WOSN  Aug 18, 2008

Key Idea #3: Crowdsourcing

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WOSN  Aug 18, 2008

User embeds widget User sets privacy level Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted

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WOSN  Aug 18, 2008

User embeds widget User sets privacy level Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted

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high low

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WOSN  Aug 18, 2008

User embeds widget User sets privacy level Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted

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WOSN  Aug 18, 2008

User embeds widget User sets privacy level Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted

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WOSN  Aug 18, 2008

User embeds widget User sets privacy level Client requests access to site Lineup generates photo „test‟ Client solves „test‟ Access granted

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WOSN  Aug 18, 2008

Key Idea #4: Trust

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WOSN  Aug 18, 2008

Challenges: Security

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WOSN  Aug 18, 2008

Future Directions