Md Din, Marina, Norziana Jamil, Jacentha Maniam, and Mohamad Afendee Mohamed. “Indoor Positioning: Technology Comparison Analysis”. International Journal of Engineering and Technology 7, no. 2.14 (April 6, 2018): 133–137. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/12813.