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Usable Security – Password Fallback Authentication. COMP6620 – User Interface Design Shaneé Dawkins Robert Voitle. Project Background. Password Fallback Authentication Resource resorted to when users forget their passwords Existing Tools CAPTCHA Pre-defined questions
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Usable Security – Password Fallback Authentication COMP6620 – User Interface Design Shaneé Dawkins Robert Voitle
Project Background • Password Fallback Authentication • Resource resorted to when users forget their passwords • Existing Tools • CAPTCHA • Pre-defined questions • User-defined questions • Preference based authentication
Project Overview • Preference-based Method • User chosen images • How it works • User selects 8 preferences during account set up (likes & dislikes) • User is presented with preferences if password forgotten • User must make selections • No obscure question answers to memorize
Evaluation • Usability Study • Memorability (2 phase study) • Learnability (ease of use) • Safety (security) • Efficiency (time to select preferences) • Effectiveness (completion) • Utility (real world application) • Heuristics • Color blind • Security?