Sai Divya, M, and M Nagabhushana Rao. “Centralized Authentication Smart Locking System Using RFID, Fingerprint, Password and GSM”. International Journal of Engineering & Technology 7, no. 3.12 (July 20, 2018): 516–520. Accessed May 3, 2024. https://sciencepubco.com/index.php/ijet/article/view/16170.