Smartwatch Health Monitoring (IMAGE) University of California - Los Angeles Caption The underside of this custom-built smartwatch contains a double-sided adhesive that can detect metabolites and nutrients present in body sweat. Credit Yichao Zhao/UCLA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.