NARAYANA, Dr.V.A, G.KARTHIK REDDY, K. RAVIKIRAN, MANISH, and NIKHIL. “SMART ATTENDENCE MONITERING SYSTEM”. The journal of contemporary issues in business and government 27, no. 6 (December 30, 2021): 1847–1852. Accessed July 17, 2024. https://cibgp.com/au/index.php/1323-6903/article/view/2278.