Putra, I.P., Witriyono, H. , Rifqo, M.H. and Muntahanah, M. 2022. Utilization of Base64 Encryption Repetition for QR Code Presence on Online Attendance. Jurnal Komputer, Informasi dan Teknologi. 2, 2 (Dec. 2022), 519–528. DOI:https://doi.org/10.53697/jkomitek.v2i2.942.