Your Fitbit could soon get a potentially life-saving update

Fitbit is investigating whether some of its existing fitness trackers can be used to measure blood pressure, and is asking its users to help out.

The study, run by Fitbit Labs, will look at whether the Fitbit Sense can monitor pulse arrival time (PAT), which is the time it takes for a pulse of blood to reach your wrist after your heart beats. This isn’t a direct measure of blood pressure, but could be a useful proxy.

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