Wearable Sensor, Hydration level of the skin, 2017–21
John A. Rogers, a physical chemist and materials scientist at Northwestern University in Evanston, Illinois, creates medical-grade wearable devices. These devices can be applied to optimal parts of the body (unlike a wristwatch) and can be used to track a wide range of body processes. Sensors designed to monitor COVID-19 track coughing, vocalization, and temperature.
It is credited
Courtesy of John A. Rogers.