Fitbit starts study into possible cuff-free blood pressure monitoring April 9, 2021 Wearables like smartwatches and fitness bands have become more than just devices to track your notifications and your fitness activities. Over the years they have become health trackers as well as some of them can now track your heart rate, blood oxygen levels, sleep quality, and even ECG. There are still a few more things that are theoretically possible to be tracked on wearables but they need to be studied more. Fitbit Labs is now looking at a way to measure blood pressure without the usual cuffs. High blood pressure or hypertension is one of the largest silent killers and one way to detect it is through regular blood pressure monitoring. But not everyone has a device in their house and even then, the devices have cuffs which can be inconvenient at times. There has been some interest in creating cuff-less devices but there hasn’t been any movement in that area. Now Fitbit Labs is looking into an indirect way of measuring through Pulse Arrival Time or PAT.