Muhammad Hilmiawan Sulthoni, Vikky Aprelia Windarni, Surya Tri Atmaja, Dewi Anisa Istiqomah and Fiyas Mahananing Puri (2025) “Design and Implementation of a QR Code-Based Attendance Application at SMA Negeri 1 Cangkringan”, Jurnal E-Komtek, 9(1), pp. 123-136. doi: 10.37339/e-komtek.v9i1.2392.