SINDHURI, B. P. . QR CODE BASED MULTI FACTOR AUTHENTICATION PROTOCOL FOR IoT NETWORKS. International Journal of Engineering Technology and Computer Research, [S. l.], v. 9, n. 3, 2021. DisponĂ­vel em: https://ijetcr.org/index.php/ijetcr/article/view/524. Acesso em: 2 dec. 2021.