Inside Fitbit’s Plan to Detect Covid Symptoms With a New Wearable

We talked to the team behind the new Fitbit Sense, a $329 smartwatch dedicated to tracking your health

David Pogue


Graphic illustration of a person wearing a Fitbit watch that has a holographic covid coming out of it.
Illustration: Sandro Rybak

The main reason the coronavirus has shut down society isn’t that it’s deadly; it’s that it’s invisible. If you could see the damn particles — as a neon-yellow cloud on someone’s breath, or a neon-yellow patch on a doorknob — you could avoid it, and the disease wouldn’t spread.

Fitbit is in the business of making the invisible visible. From the vibration patterns of your footsteps, they reveal how active you are. From your arm-movement patterns, they determine what exercise you’re performing. From your heart rate and tossing-and-turning frequency, they can graph your sleep stages.

The company’s latest ambition is to expand that detection principle to your overall health. If a smartwatch could learn the patterns of an early Covid-19 infection, for example, it could save your life and thousands of others. Fitbit’s new smartwatch, the Fitbit Sense (announced today and out next month for $329) is the first step.

Like the company’s previous efforts, it’s not a do-everything cellular wonder toy like the Apple Watch. It doesn’t make phone calls or unlock your Mac. Its app store has a few hundred…