Fitbit is focusing to fit in a blood pressure monitor in the upcoming Fitbit Sense and the trials have begun. Health Trackers are becoming an essential wearable these days and also helping in saving lives with minute-to-minute monitoring.
On the same note, there is interesting research going on in the labs of Fitbit to make the trackers more useful. This might become one of the best trackers if the idea of measuring hypertension using a tracker is successful.
The current lifestyle is highly stressful and there is a clear requirement to monitor your blood pressure. If you can do the same with a health tracker along with many other health tracking modes then that would be a great deal.