Stop to Unlock - Improving the Security of Android Unlock Patterns
user-5edf3a5a4c775e09d87cc848(2019)
摘要
Android unlock patterns are among the most common authentication mechanisms on mobile devices. They are fast
and easy to use but also lack security as user-chosen gestures
are easy to guess and easy to observe. To improve the traditional
pattern approach, we propose Stop2Unlock, a usable but more
secure modification of the traditional pattern lock. Stop2Unlock
allows users to define nodes where they stop for a limited amount
of time before swiping to the next node. We performed a lab
study (n=40) and a field study (n=14) to show that this small
change in user interaction can have a significant impact on
security with a minimal impact on usability. That is, user-selected
Stop2Unlock patterns are significantly harder to guess while being
comparable in terms of usability. Additional analysis showed that
users perceived the stop component as a rhythmic and memorable
cue which supported the selection of higher entropy patterns.
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关键词
Usability,Mobile device,USable,Human–computer interaction,Gesture,Computer science,Entropy (information theory)
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