E-Ration Distribution and Fraud Detection System Based On QR Code. International Journal of Advance Engineering and Research Development (IJAERD), [S. l.], v. 7, n. 2, p. 29–32, 2020. Disponível em: https://ijaerd.org/index.php/IJAERD/article/view/4557. Acesso em: 6 sep. 2025.