Scientists are currently starting trials to detect whether wearable devices, like Fitbits or Samsung Galaxy wearables, can detect Covid-19 symptoms - that could lead to a diagnosis. However, these studies are in the early stages and still need to be peer-reviewed by other scientific journals/scientists. However, the Oklahoman Journal had said that the preliminary results 'appear intriguing'.
The journal stated that last week, West Virginia University researchers had announced a data-collecting ring made by Oura. When partnered with an app to gather other information, it can up to predict three days in advanced when people will develop a fever, cough or shortness of breath. The ring (made by Oura) can also detect body temperature - which gives it an advantage over other smart devices.
The main difference in people that were detected by the wearable device was the increased heart rate. However, researches need to do more work to 'verify these results'.
The Oklahoman Journal had said that if enough people receive 'red flags' from their wearable devices (smartwatches, mainly) and stayed home rather than going to work or school, it could curb the spread of the novel coronavirus.
Real-time "aggregation of data could help public health authorities identify potential clusters of new cases — and take measures to stem them before they become full-blown outbreaks".
The main red-flags that people should be looking for is an increased heart rate and possibly a high temperature to detect Covid-19.