D. Tambunan, Toufan, Reza Budiawan, Wahyu Hidayat, and Fadhlulloh Bagas Samudra. “Student Attendance Recording Using Smart Camera Sensor”. International Journal of Engineering & Technology 8, no. 1.9 (January 26, 2019): 176–180. Accessed May 3, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/26394.