An enhanced capture attacks resistant text-based graphical password scheme. - Wei-Chi Ku; Dum-Min Liao; Chia-Ju Chang; Pei-Jia Qiu (ICCC, 2014)

A Sector-Based Graphical Password Scheme with Resistance to Login-Recording Attacks. - Wei-Chi Ku; Yu-Chang Yeh; Bo-Ren Cheng; Chia-Ju Chang (IEICE Trans. Inf. Syst., 2015)

A Simple Sector-Based Textual-Graphical Password Scheme with Resistance to Login-Recording Attacks. - Wei-Chi Ku; Bo-Ren Cheng; Yu-Chang Yeh; Chia-Ju Chang (IEICE Trans. Inf. Syst., 2016)