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Double Patterns: A Usable Solution to Increase the Security of Android Unlock Patterns by Forman, Timothy J.; Aviv, Adam J. is a scholarly article available to read on EtoBox.

What is Double Patterns: A Usable Solution to Increase the Security of Android Unlock Patterns about?

Android unlock patterns remain quite common. Our study, as well as others, finds that roughly 25\% of respondents use a pattern when unlocking their phone. Despite known security issues, the design of the pattern interface remains unchanged since first launch. We propose Double Patterns, a natural and easily adoptable advancement on Android unlock patterns that maintains the core design features, but instead of selecting a single pattern, a user selects two, concurrent Android unlock patterns entered one-after-the-other super-imposed on the same 3x3 grid. We evaluated Double Patterns for both security and usability by conducting an online study with $n=634$ participants in three treatments: a control treatment, a first pattern entry blocklist, and a blocklist for both patterns. We find that in all settings, user chosen Double Patterns are more secure than traditional patterns based on standard guessability metrics, more similar to that of 4-/6-digit PINs, and even more difficult to guess for a simulated attacker. Users express positive sentiments in qualitative feedback, particularly those who currently (or previously) used Android unlock patterns, and overall, participants found t

Author

Forman, Timothy J.; Aviv, Adam J.

Published

2020

Language

EN