Chip-free sensor (IMAGE) Massachusetts Institute of Technology Caption MIT engineers fabricated a chip-free, wireless electronic “skin.” The device senses and wirelessly transmits signals related to pulse, sweat, and ultraviolet exposure, without bulky chips or batteries. Credit Courtesy of the researchers Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.