Fitbit researching wrist-based BP tracking in 'Sense' By IANS | 7 Views Fitbit Sense gets ECG app functionality in US and Europe.. Image Source: IANS News San Francisco, April 8 : Wearable brand Fitbit is investigating whether it can measure blood pressure with a new study for Sense smartwatch users. Fitbit Sense comes with electrodermal activity (EDA) to measure daily stress and comes with a heart rate tracker, electrocardiogram (ECG) monitor and skin temperature sensors. According to 9To5Google, Fitbit Labs is launching a blood pressure study this month to "potentially measure" Pulse Arrival Time (PAT), or the "time it takes for a pulse of blood to reach your wrist after your heart beats".