Nugraha D, Aminudin, Agustine M. Design and Functional Testing of a QR Code–Based Attendance System Prototype in a Special Library for Improving Visitor Recording Efficiency. tibanndaru. jurnal. perpust. inf. [Internet]. 2026 Apr. 26 [cited 2026 Apr. 29];10(1):68-79. Available from: https://journal.uwks.ac.id/Tibandaru/article/view/5238