Islam A, Othman F, Sakib N, Babu HMH. Prevention of Shoulder-Surfing Attack Using Shifting Condition with the Digraph Substitution Rules. AIA [Internet]. 2022 Nov. 15 [cited 2024 Apr. 23];1(1):58-6. Available from: https://ojs.bonviewpress.com/index.php/AIA/article/view/289