Conference Papers

[C11]
Wave to Me: User Identification Using Body Lengths and Natural Gestures
Eiji Hayashi, Manuel Maas, and Jason I. Hong
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI) 2014
Full Paper [pdf]
[C10]
Memorability of the Mundane: Exploring Capturable Everyday Memory for Autobiographical Authentication
Sauvik Das, Eiji Hayashi, and Jason I. Hong
In Proceedings of the ACM International Joint Conference on Pervasive and Ubiquitous Computing (Ubicomp) 2013
Full Paper (Best Paper Award) [pdf]
[C9]
CASA: Context-Aware Scalable Authentication
Eiji Hayashi, Sauvik Das, Shahriyar Amini, Jason I. Hong, and Ian Oakley
In Proceedings of Symposium on Usable Security and Privacy (SOUPS) 2013
Full Paper [pdf]
[C8]
Investigating Collaborative Mobile Search Behaviors
Shahriyar Amini, Vidya Setlur, Zhengxin Xi, Eiji Hayashi, and Jason I. Hong
In Proceedings of International Conference on Human-Computer Interaction with Mobile Devices and Services (MobileHCI) 2013
Short Paper [pdf]
[C7]
Goldilocks and the Two Mobile Devices: Going Beyond All-Or-Nothing Access to a Device's Applications
Eiji Hayashi, Oriana Riva, Karin Strauss, A.J. Bernheim Brush, and Stuart Schechter
In Proceedings of the Symposium On Usable Privacy and Security (SOUPS) 2012
Full Paper [pdf]
[C6]
WebTicket: Account Management Using Printable Tokens
Eiji Hayashi, Bryan Pendleton, Faith Kursat Ozenc, and Jason I. Hong
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI) 2012
Full Paper [pdf]
[C5]
TimeBlocks: "Mom, Can I Have Another Block of Time?"
Eiji Hayashi, Martina A Rau, Zhe Han Neo, Nastasha Tan, Sriram Ramasubramanian, and Eric Paulos
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI) 2012
Short Paper [pdf]
[C4]
Security through a Different Kind of Obscurity: Evaluating Distortion in Graphical Authentication Schemes
Eiji Hayashi, Jason I. Hong, and Nicolas Christin
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI) 2011
Full Paper [pdf]
[C3]
A Diary Study of Password Usage in Daily Life
Eiji Hayashi and Jason I. Hong
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI) 2011
Short Paper [pdf]
[C2]
Use Your Illusion: Secure Authentication Usable Anywhere
Eiji Hayashi, Nicolas Christin, Rachna Dhamija, and Adrian Perrig
In Proceedings of the Symposium on Usable Privacy and Security (SOUPS) 2008
Full Paper [pdf] [slides] [demo site]
[C1]
Undercover: Authentication Usable in Front of Prying Eyes
Hirokazu Sasamoto, Nicolas Christin, and Eiji Hayashi
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI) 2008
Full Paper [pdf]

Workshop Papers

[W1]
CASA: context-aware scalable authentication
Eiji Hayashi, Sauvik Das, Shahriyar Amini, Emmanuel Owusu, Jun Han, Jason I. Hong, Ian Oakley, Adrian Perrig, and Joy Zhang
Workshop on Usable Privacy & Security for Mobile Devices (U-PriSM) 2012
[pdf]

Other Publications

[A1]
New Directions in Multisensory Authentication
Madoka Hasegawa, Nicolas Christin, and Eiji Hayashi
In Pervasive Adjunct Proceedings 2009
Late Breaking Results [pdf]