“A Hardware-Secured Wearable Device for Direct Hydration and Vital Monitoring Using Multimodal Sensor Fusion ”. International Research Journal on Advanced Engineering Hub (IRJAEH) 4, no. 06 (June 10, 2026): 4155–4164. Accessed July 20, 2026. https://irjaeh.com/index.php/journal/article/view/1840.