![]() Information from a fitness tracker can even be shared with your doctor. When charted on a mobile app or a website, the measurements from these sensors can give you insight into your daily habits and long-term trends.Ī tracker can also provide motivational support, from a simple vibrating alert when it’s time to get up from your desk, to challenges, badges, and interactions with online friends and family members who use a similar device. Barometer to determine your altitude, not just how far above sea level you are but also how many flights of stairs you climbed this morning to get to your office.GPS to track your location and map your route while you’re out on a ride or a run.Gyroscope or other positional sensors to determine whether you’re standing, sitting, reclining, swimming, cycling, etc.Once reserved for smartwatches, this feature is starting to pop up in trackers. Blood oxygen tracker to monitor how well your body is using oxygen, a metric that can be useful in sleep tracking. ![]() Heart rate monitor to track your pulse during exercise and throughout the day.Most trackers have an accelerometer or other sensors to help measure your steps and other up-down, side-to-side, and front-to-back movements. On higher-end models it can include more sophisticated metrics like sleep-tracking info and even detection of abnormal heart rhythms. The data varies by tracker but likely begins with basic information like the number of steps you’ve taken and your heart rate while you’re exercising. They usually sync wirelessly with a smartphone app that stores this information. All fitness trackers use a variety of sensors to monitor your movements as well as health metrics like your heart rate.
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