Sweat-powered finger wrap sensors (IMAGE) University of California - San Diego Caption This finger wrap is powered by the wearer's fingertip sweat—and also monitors levels of glucose, lactate, vitamin C and levodopa in that same sweat. Credit Shichao Ding Usage Restrictions Please credit: Shichao Ding License Original 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.