P. Andriotis, G. Oikonomou, A. Mylonas, T. Tryfonas

Abstract:
The Android pattern lock screen (or graphical password) is a popular user authentication method that relies on the advantages provided by the visual representation of a password, which enhance its memorability. Graphical passwords are vulnerable to attacks (e.g. shoulder surfing); thus, the need for more complex passwords becomes apparent. This paper aims to focus on the features that constitute a usable and secure pattern and investigate the existence of heuristic and physical rules that possibly dictate the formation of a pattern.
Reference:
P. Andriotis, G. Oikonomou, A. Mylonas, T. Tryfonas, "A Study on Usability and Security Features of the Android Pattern Lock Screen", Information and Computer Security, Emerald, 24(1), pp. 53-72, 2016
Bibtex Entry:
@ARTICLE{Andriotis-2016-ics,
  title = {A Study on Usability and Security Features of the Android Pattern Lock Screen},
  author = {Panagiotis Andriotis and George Oikonomou and Alexios Mylonas and Theo Tryfonas},
  year = {2016},
  journal = {Information and Computer Security},
  publisher = {Emerald},
  gsid = {5950329922045653607},
  doi = {10.1108/ICS-01-2015-0001},
  volume = {24},
  number = {1},
  pages = {53--72},
  abstract = {The Android pattern lock screen (or graphical password) is a popular user authentication method that relies on the advantages provided by the visual representation of a password, which enhance its memorability. Graphical passwords are vulnerable to attacks (e.g. shoulder surfing); thus, the need for more complex passwords becomes apparent. This paper aims to focus on the features that constitute a usable and secure pattern and investigate the existence of heuristic and physical rules that possibly dictate the formation of a pattern.},
}
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A Study on Usability and Security Features of the Android Pattern Lock Screen