Rao S, A S, Kulkarni K. Smart Phone based Cost Effective Visitor Management System for Smart Offices. Int. J. Interact. Mob. Technol. [Internet]. 2018 Oct. 29 [cited 2024 Nov. 22];12(6):pp. 112-123. Available from: https://online-journals.org/index.php/i-jim/article/view/9476