The knowledge complexity of interactive proof-systems
STOC '85 Proceedings of the seventeenth annual ACM symposium on Theory of computing
Communications of the ACM
Password security: a case history
Communications of the ACM
Secrets & Lies: Digital Security in a Networked World
Secrets & Lies: Digital Security in a Networked World
Hash visualization in user authentication
CHI '00 Extended Abstracts on Human Factors in Computing Systems
Photographic Authentication through Untrusted Terminals
IEEE Pervasive Computing
UNIX Password Security - Ten Years Later
CRYPTO '89 Proceedings of the 9th Annual International Cryptology Conference on Advances in Cryptology
Password Memorability and Security: Empirical Results
IEEE Security and Privacy
A PIN-entry method resilient against shoulder surfing
Proceedings of the 11th ACM conference on Computer and communications security
Using personal photos as pictorial passwords
CHI '05 Extended Abstracts on Human Factors in Computing Systems
PassPoints: design and longitudinal evaluation of a graphical password system
International Journal of Human-Computer Studies - Special isssue: HCI research in privacy and security is critical now
International Journal of Human-Computer Studies - Special isssue: HCI research in privacy and security is critical now
Security and Usability
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Cognitive Authentication Schemes Safe Against Spyware (Short Paper)
SP '06 Proceedings of the 2006 IEEE Symposium on Security and Privacy
SOUPS '06 Proceedings of the second symposium on Usable privacy and security
A large-scale study of web password habits
Proceedings of the 16th international conference on World Wide Web
Déjà Vu: a user study using images for authentication
SSYM'00 Proceedings of the 9th conference on USENIX Security Symposium - Volume 9
On user choice in graphical password schemes
SSYM'04 Proceedings of the 13th conference on USENIX Security Symposium - Volume 13
Stronger password authentication using browser extensions
SSYM'05 Proceedings of the 14th conference on USENIX Security Symposium - Volume 14
The design and analysis of graphical passwords
SSYM'99 Proceedings of the 8th conference on USENIX Security Symposium - Volume 8
Reducing shoulder-surfing by using gaze-based password entry
Proceedings of the 3rd symposium on Usable privacy and security
Modeling user choice in the PassPoints graphical password scheme
Proceedings of the 3rd symposium on Usable privacy and security
Communications of the ACM
Do background images improve "draw a secret" graphical passwords?
Proceedings of the 14th ACM conference on Computer and communications security
The Seven Flaws of Identity Management: Usability and Security Challenges
IEEE Security and Privacy
Use Your Illusion: secure authentication usable anywhere
Proceedings of the 4th symposium on Usable privacy and security
SS'08 Proceedings of the 17th conference on Security symposium
On user involvement in production of images used in visual authentication
Journal of Visual Languages and Computing
Visual passwords: cure-all or snake-oil?
Communications of the ACM - Finding the Fun in Computer Science Education
Usable authentication and click-based graphical passwords
Usable authentication and click-based graphical passwords
Usably secure, low-cost authentication for mobile banking
Proceedings of the Sixth Symposium on Usable Privacy and Security
MARASIM: a novel jigsaw based authentication scheme using tagging
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Evaluating the usability and security of a graphical one-time PIN system
BCS '10 Proceedings of the 24th BCS Interaction Specialist Group Conference
Graphical password authentication using cued click points
ESORICS'07 Proceedings of the 12th European conference on Research in Computer Security
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Graphical passwords are considered to be a secure and memorable alternative to text passwords. Users of such systems, authenticate themselves by identifying a subset of images from the set of displayed images. However, despite the impressive results of user studies on experimental graphical passwords schemes, their overall commercial adaptations have been relatively low. In this paper, we investigate the reasons behind the low commercial acceptance of graphical passwords and present recommendations to overcome the same. Based on these recommendations, we design a simple graphical password scheme, which we call as NAPTune. NAPTune is aimed to work as a cued recognition based graphical authentication scheme that allows users to choose both text as well as images as their password with the same underlying design and interaction. In doing so, we blend the strengths of Numbers, Alphabets and Pictures (NAP) together to effectively defeat prevalent forms of social hacking. We conducted a user study with 35 participants to evaluate the viability of our proposed design. Results of the study are encouraging which indicates that our proposed design is potentially secure and usable method of authentication.