Dhanya G Nair, Dr. K. P. Sanal Kumar, and Dr. S. Anu H Nair. “A SURVEY ON MONITORING SOCIAL DISTANCE USING WEARABLE OR IOT SENSOR DEVICES”. International Engineering Journal For Research & Development 6, no. ICRRTNB (December 17, 2021): 8. Accessed November 5, 2025. https://iejrd.com/index.php/ /article/view/2578.