The design and analysis of graphical passwords
SSYM'99 Proceedings of the 8th conference on USENIX Security Symposium - Volume 8
On predictive models and user-drawn graphical passwords
ACM Transactions on Information and System Security (TISSEC)
Do background images improve "draw a secret" graphical passwords?
Proceedings of the 14th ACM conference on Computer and communications security
Do strong web passwords accomplish anything?
HOTSEC'07 Proceedings of the 2nd USENIX workshop on Hot topics in security
The performance of touch screen soft buttons
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Influencing users towards better passwords: persuasive cued click-points
BCS-HCI '08 Proceedings of the 22nd British HCI Group Annual Conference on People and Computers: Culture, Creativity, Interaction - Volume 1
A closer look at recognition-based graphical passwords on mobile devices
Proceedings of the Sixth Symposium on Usable Privacy and Security
Smudge attacks on smartphone touch screens
WOOT'10 Proceedings of the 4th USENIX conference on Offensive technologies
100,000,000 taps: analysis and improvement of touch performance in the large
Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services
Smart phone use by non-mobile business users
Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services
Facing the facts about image type in recognition-based graphical passwords
Proceedings of the 27th Annual Computer Security Applications Conference
Biometric-rich gestures: a novel approach to authentication on multi-touch devices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Graphical passwords: Learning from the first twelve years
ACM Computing Surveys (CSUR)
Password entry usability and shoulder surfing susceptibility on different smartphone platforms
Proceedings of the 11th International Conference on Mobile and Ubiquitous Multimedia
Passwords and interfaces: towards creating stronger passwords by using mobile phone handsets
Proceedings of the Third ACM workshop on Security and privacy in smartphones & mobile devices
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Typing text passwords is challenging when using touchscreens on mobile devices and this is becoming more problematic as mobile usage increases. We designed a new graphical password scheme called Touchscreen Multi-layered Drawing (TMD) specifically for use with touchscreens. We conducted an exploratory user study of three existing graphical passwords on smart phones and tablets with 31 users. From this, we set our design goals for TMD to include addressing input accuracy issues without having to memorize images, while maintaining an appropriately secure password space. Design features include warp cells which allow TMD users to continuously draw their passwords across multiple layers in order to create more complex passwords than normally possible on a small screen. We compared the usability of TMD to Draw A Secret (DAS) on a tablet computer and a smart phone with 90 users. Results show that TMD improves memorability, addresses the input accuracy issues, and is preferred as a replacement for text passwords on mobile devices.