A Hardware-Secured Wearable Device for Direct Hydration and Vital Monitoring Using Multimodal Sensor Fusion . International Research Journal on Advanced Engineering Hub (IRJAEH), [S. l.], v. 4, n. 06, p. 4155–4164, 2026. DOI: 10.47392/IRJAEH.2026.0537. Disponível em: https://irjaeh.com/index.php/journal/article/view/1840.. Acesso em: 19 jul. 2026.