Alfarisyah, Arif. “A Literature Review Internet Of Things (Iot): Qr Code”. Jurnal Jaringan Komputer dan Keamanan 4, no. 3 (October 20, 2023): 25-29. Accessed March 3, 2023. https://iitss.or.id/ojs/index.php/jjkk/article/view/62.