Hirokazu Sasamoto, Nicolas Christin, Eiji Hayashi. Undercover: authentication usable in front of prying eyes. In Mary Czerwinski, Arnold M. Lund, Desney S. Tan, editors, Proceedings of the 2008 Conference on Human Factors in Computing Systems, CHI 2008, 2008, Florence, Italy, April 5-10, 2008. pages 183-192, ACM, 2008. [doi]
Abstract is missing.