“Sistem Pengelolaan Kegiatan Perusahaan Menggunakan Identifikasi QR Code”. Journal of Informatic and Information Security 2, no. 1 (March 26, 2024): 123–136. Accessed May 21, 2024. https://ejurnal.ubharajaya.ac.id/index.php/jiforty/article/view/1040.