Gatla Namdev, Polagani Kotesh, Gadge Prathigna, Gaddam Praveen, Sangaraboina Eshwar Prasad, and Motapothula Laxmi Prasanna. “AI-Enabled Metro Access System Using ESP32 for Monitoring and MultiLayered Passenger Authentication”. International Journal of Data Science and IoT Management System 5, no. 2(1) (April 14, 2026): 356–362. Accessed June 1, 2026. https://ijdim.com/journal/index.php/ijdim/article/view/713.