The goal is to see if wearables might be able to alert infected individuals of Covid-19 or flu before they are symptomatic or infect others. You have to be over 21 to opt-in to the study.

There’s obviously no guarantee that Fitbit will find a connection to early stages of illness and its wearables’ tracking but it’s good to see that it’s trying. There are millions of Fitbit devices in use around the world and the company is sitting on a lot of data, so it clearly feels it has an obligation to try and help in this time of pandemic.

Fitbit was acquired by Google last year, though both companies have not revealed what has changed behind the scenes. In this study Fitbit appears to be operating as its own entity still. 

See our recommended Best Fitbit roundup for more details of the company's activity trackers and smartwatches.