Adhesive Film Turns Smartwatch into Biochemical Monitor

Engineers have designed a thin adhesive film that could upgrade a consumer smartwatch into a powerful health monitoring system. Smartwatches can already help keep track of how far the wearer walks and sleeps and monitors heart rate; newer models monitor blood pressure. Working with a tethered smartphone or other devices, someone can use a smartwatch to keep track of those health indicators over a long period of time.