Jayusta E, Marhalim M, Immanullah M, Reswan Y. Robustness Analysis of QR – Code Based and Geolocation Based Attendance System. jmi [Internet]. 12Oct.2024 [cited 21Nov.2024];20(2):517-24. Available from: https://jurnal.unived.ac.id/index.php/jmi/article/view/6510