Mecola Bernedo, J. C., J. D. Tirado Ávila, and A. C. Mendoza de los Santos. “Multimodal Authentication System With Facial Recognition and Totp for Adaptable Secure Access”. Innovation and Software, Vol. 7, no. 1, Mar. 2026, pp. 79-93, doi:10.48168/innosoft.s29.a339.