Early data suggest wearables can catch some cases of Covid-19 before symptoms emerge

Early data suggest wearables can catch some cases of Covid-19 before symptoms emerge

Source: 
Stat
snippet: 

The results of several ambitious studies testing wearables as early predictors of for Covid-19 are in — and they suggest that data from devices including Apple Watches, Fitbits, and Oura smart rings may be useful for flagging some infections in people before they even feel ill.