HERMANTO, Toto; MONIKA, Gulo. Development of a GPS and QR Code Based Mobile Attendance Application to Improve Employee Discipline at PT Merpati Mahardika. Journal of Engineering Technology and Science Integration (JETSI), [S. l.], v. 1, n. 1, p. 59–67, 2026. Disponível em: https://nordeoscholar.com/jetsi/article/view/12. Acesso em: 4 aug. 2026.