PassMatrix: Graphical Based Authentication System for Shoulder Surfing Attack Resistant . International Journal of Advance Engineering and Research Development (IJAERD), [S. l.], v. 3, n. 12, p. 14–18, 2016. Disponível em: https://ijaerd.org/index.php/IJAERD/article/view/1836. Acesso em: 9 sep. 2025.