Patterns in the wild: a field study of the usability of pattern and pin-based authentication on mobile devices

摘要: Graphical password systems based upon the recall and reproduction of visual patterns (e.g. as seen on Google Android platform) are assumed to have desirable usability memorability properties. However, there no empirical studies that explore whether this is actually case an everyday basis. In paper, we present results a real world user study across 21 days was conducted gather such insight; compared performance Android-like personal identification numbers (PIN), both smartphones, in field study. The quantitative indicate PIN outperforms pattern lock when comparing input speed error rates. qualitative suggest users tend accept still favor certain extent. For instance, it rated better terms ease-of-use, feedback likeability. Most interestingly, even though does not provide any undo or cancel functionality, significantly than recovery; provides insight into relationship between prevention recovery authentication.