SHIVAMURTHAIAH, M; KUMAR SINHA, Sitesh; PRAVEEN KUMAR, K; MANASA, LR. An Authentication for digital transaction with OTP using Color Code Systems (CCS). International Journal of Computer Sciences and Engineering, [S. l.], v. 5, n. 10, p. 285–287, 2025. DOI: 10.26438/ijcse/v5i10.285287. Disponível em: https://ijcse.isroset.org/index.php/j/article/view/1700. Acesso em: 2 feb. 2026.