Marrapu, Satvika, Satyanarayana Sanakkayala, Arun kumar Vempalli, and Sai Krishna Jayavarapu. “Smart Home Based Security System for Door Access Control Using Smart Phone”. International Journal of Engineering & Technology 7, no. 1 (March 3, 2018): 249–251. Accessed May 2, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/9247.