http://www.zdnet.com/article/could-...sensors-are-helping-tackle-a-dangerous-heart/ Could your Apple Watch save your life? How smartwatch sensors could help tackle a dangerous heart condition A collaboration between Cupertino and Stanford University's medical school is aiming to conduct what could be the biggest research study into atrial fibrillation. You already know your smartwatch is a pretty smart bit of kit. It tells you how many steps you've taken, how many calories you've burned off, and your resting heart rate. But could it one day even save your life? A new research project using data gathered from Apple Watches has the potential to do just that. The Apple Heart Study, a collaboration between Apple and Stanford Medicine, is designed to identify atrial fibrillation -- a condition that can lead to serious complications, such as heart failure and strokes. Around one in four people will experience atrial fibrillation in their lifetime, and it's thought to account for 120,000 deaths a year -- but some people with the condition may not even be aware they have it. The Apple Heart Study is open to US residents aged over 22 with a 2016 Apple Watch Series 1 or later. All participants have to do is download the Apple Heart Study app from the App Store and install it on their phone and Watch. The data gathered by participants' Watches will be used to study the incidence of atrial fibrillation in the population at large, and help improve the technology used to detect heart arrhythmias such as AF.