Sulyono, Sulyono, Darius Antoni, and Jon Heri. “Sistem Presensi Karyawan Menggunakan Metode Geofencing Dan Face Capture Push Notification”. Journal of Information Technology Ampera 2, no. 1 (July 28, 2021): 32–39. Accessed August 13, 2026. https://mail.journal-computing.org/index.php/journal-ita/article/view/67.