Ardina, Elfira Nureza, Erlinasari Erlinasari, and Taufiq Dwi Cahyono. “Sistem Keamanan Pada Kunci Pintu Rumah Smart Key Menggunakan Quick Response (QR) Barcode”. Jurnal Ilmiah Ekonomika & Sains 3, no. 2 (November 30, 2022): 12-19. Accessed April 21, 2025. https://itbsemarang.ac.id/sijies/index.php/jiesa/article/view/255.