Oura rolls out Symptom Radar, a feature that tries to detect early signs of sickness using biometrics like heart rate variability, to Oura Ring Gen 3 and 4 (Victoria Song/The Verge)

Victoria Song / The Verge:
Oura rolls out Symptom Radar, a feature that tries to detect early signs of sickness using biometrics like heart rate variability, to Oura Ring Gen 3 and 4  —  At the height of the covid-19 pandemic, many wearable companies rushed to see if their devices could detect early signs of the disease.