Sari, Aprianti Nanda, and Trisna Gelar Abdillah. “Metode Absensi Mahasiswa Berbasis QR Code Dan Time-Based One-Time Password”. Jurnal Informatika Polinema 7, no. 2 (February 23, 2021): 29–34. Accessed July 4, 2024. http://jurnal.polinema.ac.id/index.php/jip/article/view/2516.