Michael Markus, Endi Permata, and Desmira. “Smart Attandance System Menggunakan Smart Card Berbasis Internet Of Things (IoT)”. SinarFe7 2, no. 1 (August 16, 2019): 248–255. Accessed May 18, 2024. https://journal.fortei7.org/index.php/sinarFe7/article/view/442.