Seng, Woo Chaw, Leong Lai Fong, Ng Liang Shing, and Saied Ali Hosseini Noudeh. 2011. “Robust Watermarking Using Hand Gesture for Enhanced Authentication”. Malaysian Journal of Computer Science 24 (2):98-110. https://sare.um.edu.my/index.php/MJCS/article/view/6548.