Design and Development of a Smart Heart Rate, SpO₂, Location Tracking and Emergency Alert Device (Koneti Ajay, Macha Raja Nandini, Konda Divyasree Akshitha, Mamidi Valetaiah, & Repana Reddy Prasanna, Trans.). (2026). International Journal of Scientific Research in Science and Technology, 13(2), 462-469. https://mail.ijsrst.com/index.php/home/article/view/IJSRST2613318