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2010
ACM

A closer look at recognition-based graphical passwords on mobile devices

8 years 9 months ago
A closer look at recognition-based graphical passwords on mobile devices
Graphical password systems based on the recognition of photographs are candidates to alleviate current over-reliance on alphanumeric passwords and PINs. However, despite being based on a simple concept – and user evaluations consistently reporting impressive memory retention – only one commercial example exists and overall take-up is low. Barriers to uptake include a perceived vulnerability to observation attacks; issues regarding deployability; and the impact of innocuous design decisions on security not being formalized. Our contribution is to dissect each of these issues in the context of mobile devices – a particularly suitable application domain due to their increasing significance, and high potential to attract unauthorized access. This produces: 1) A novel yet simple solution to the intersection attack that permits greater variability in login challenges; 2) Detailed analysis of the shoulder surfing threat that considers both simulated and human testing; 3) A first loo...
Paul Dunphy, Andreas P. Heiner, N. Asokan
Added 16 Aug 2010
Updated 16 Aug 2010
Type Conference
Year 2010
Where SOUPS
Authors Paul Dunphy, Andreas P. Heiner, N. Asokan
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