In conversation with Insider's Senior Tech Correspondent Lisa Eadicicco, Rai — whose company produces $300 rings that monitor the wearer's skin temperature and heart rate — said wearables will increasingly be able to detect warning signs. For example, perhaps an alarm would sound if your biometric readings were abnormal and your wearable would alert you to see a medical professional. "You go to the doctor after you have a heart attack," he said. "No one's really going to get all the regular checkups ... that we should, and wearables can fill that gap." About 25% of the NBA used about 2,000 Oura rings last year to track players' biometric data and ensure that they and their coaches remained COVID-free in the league's "bubble." The ring usage was optional, as the league had a number of other safety measures in place, but the intent was to be able to identify signs of infection early on.