Prakasha, P. Sathya, P. K. Vinayak, Arunkumar, Muhammed Raazi, and Bheema Shastri. 2020. “Smart Receptionist With Smart Lock System”. International Journal of Research in Engineering, Science and Management 3 (8): 137-38. https://journal.ijresm.com/index.php/ijresm/article/view/147.