Rights statement: © The Authors, 2016. This is the author's version of the work. It is posted here for your personal use. Not for redistribution. The definitive Version of Record was published in MUM '16 Proceedings of the 15th International Conference on Mobile and Ubiquitous Multimedia http://dx.doi.org/10.1145/3012709.3012730
Accepted author manuscript, 5.85 MB, PDF document
Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License
Accepted author manuscript
Final published version
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
}
TY - GEN
T1 - Memorability of cued-recall graphical passwords with saliency masks
AU - Alt, Florian
AU - Mikusz, Mateusz Andrzej
AU - Schneegass, Stefan
AU - Bulling, Andreas
N1 - © The Authors, 2016. This is the author's version of the work. It is posted here for your personal use. Not for redistribution. The definitive Version of Record was published in MUM '16 Proceedings of the 15th International Conference on Mobile and Ubiquitous Multimedia http://dx.doi.org/10.1145/3012709.3012730
PY - 2016/12/12
Y1 - 2016/12/12
N2 - Cued-recall graphical passwords have a lot of potential for secure user authentication, particularly if combined with saliency masks to prevent users from selecting weak passwords. Saliency masks were shown to significantly improve password security by excluding those areas of the image that are most likely to lead to hotspots. In this paper we investigate the impact of such saliency masks on the memorability of cued-recall graphical passwords. We first conduct two pre-studies (N=52) to obtain a set of images with three different image complexities as well as real passwords. A month-long user study (N=26) revealed that there is a strong learning effect for graphical passwords, in particular if defined on images with a saliency mask. While for complex images, the learning curve is steeper than for less complex ones, they best supported memorability in the long term, most likely because they provided users more alternatives to select memorable password points. These results complement prior work on the security of such passwords and underline the potential of saliency masks as both a secure and usable improvement to cued-recall gaze-based graphical passwords.
AB - Cued-recall graphical passwords have a lot of potential for secure user authentication, particularly if combined with saliency masks to prevent users from selecting weak passwords. Saliency masks were shown to significantly improve password security by excluding those areas of the image that are most likely to lead to hotspots. In this paper we investigate the impact of such saliency masks on the memorability of cued-recall graphical passwords. We first conduct two pre-studies (N=52) to obtain a set of images with three different image complexities as well as real passwords. A month-long user study (N=26) revealed that there is a strong learning effect for graphical passwords, in particular if defined on images with a saliency mask. While for complex images, the learning curve is steeper than for less complex ones, they best supported memorability in the long term, most likely because they provided users more alternatives to select memorable password points. These results complement prior work on the security of such passwords and underline the potential of saliency masks as both a secure and usable improvement to cued-recall gaze-based graphical passwords.
U2 - 10.1145/3012709.3012730
DO - 10.1145/3012709.3012730
M3 - Conference contribution/Paper
SN - 9781450348607
SP - 191
EP - 200
BT - MUM '16 Proceedings of the 15th International Conference on Mobile and Ubiquitous Multimedia
PB - ACM
CY - New York
ER -