DODDAM REDDY , Nagaraj; NARASIMHAN , Ganesh. IOT Based secured Low-cost Visitor Tracker using smart Application. Salud, Ciencia y Tecnología, [S. l.], v. 2, p. 238, 2022. DOI: 10.56294/saludcyt2022238. Disponível em: https://sct.ageditor.ar/index.php/sct/article/view/51. Acesso em: 5 oct. 2025.