Al-Rasyid, Johansyah, M. Nawawi, and Chitra Pratiwi. “The Keypad Passcode Design Analysis on Smart Lock Door System IoT Based”. Jurnal Teknologi Informasi dan Pendidikan 16, no. 2 (November 13, 2023): 56-67. Accessed April 19, 2025. http://tip.ppj.unp.ac.id/index.php/tip/article/view/740.