Graphical password using object-based image ranking. - Cuong Xuan Nguyen; Hung-Hsuan Huang; Kyoji Kawagoe (CCS, 2013)

Implementation and evaluations of graphical password using object-based image ranking. - Cuong Xuan Nguyen; Hung-Hsuan Huang; Kyoji Kawagoe (Comput. Syst. Sci. Eng., 2014)