Kumar V, Barve A. A Survey on Existing CAPTCHA Techniques and Proposed Gaming CAPTCHA for Better Security Analysis. Int. J. Comp. Sci. Eng. [Internet]. 2025 Nov. 11 [cited 2026 Feb. 2];5(1):101-6. Available from: https://ijcse.isroset.org/index.php/j/article/view/1341