DR.R.SIVASANGARI; R.MUTHUMARIAPPAN; S.ANBARASAN; R.BALAMURUGAN. IOT based automated home security system for elderly people using old mobile phone. International Journal of Advance Research in Engineering, Science & Technology, [S. l.], v. 5, n. 4, p. 168–172, 2018. Disponível em: https://ijarest.org/index.php/ijarest/article/view/1442. Acesso em: 3 sep. 2025.