Oura ring (IMAGE) University of California - San Diego Caption While not an FDA registered healthcare device, the Oura ring monitors a range of signals, including continuous temperature, heart rate, respiration rate and activity. Initial analysis suggests that a destabilization of temperature happens a couple of days before coronavirus symptoms manifest. The Oura ring detects this pattern. Credit Oura Ring Usage Restrictions Please credit Oura Ring License Licensed 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.