G. Tejaswai, Chiruvella Manasa, Avadhanam Sandhya Sri, Amari Sravani, Challagundla Thanusree, Kandagaddla Lakshmi Akhila. Development of an IoT-Based QR Code Access Control and Payment System using Arduino and ESP8266. J. sci. technol. [Internet]. 2024 Jun. 14 [cited 2025 Sep. 3];9(6):20-32. Available from: https://jst.org.in/index.php/pub/article/view/969