Log Monitoring System using Quick Response (QR) Code: A State University’s COVID – 19 Contact Tracing System. International Journal of Informatics, Information System and Computer Engineering (INJIISCOM), [S. l.], v. 3, n. 2, p. 209–218, 2022. DOI: 10.34010/injiiscom.v3i2.9037. Disponível em: https://ojs.unikom.ac.id/index.php/injiiscom/article/view/9037. Acesso em: 21 apr. 2025.