A Shoulder Surfing Attack Resistant by Graphical Based Authentication System. International Journal of Advance Engineering and Research Development (IJAERD), [S. l.], v. 3, n. 11, p. 260–264, 2016. Disponível em: https://ijaerd.org/index.php/IJAERD/article/view/1812. Acesso em: 9 sep. 2025.