As the number of self-tracking health and fitness tools available to consumers continues to climb, a persistent question has been whether the data they collect might be useful to health researchers.

When you were growing up, the closest you ever got to a personal medical data-collection device was probably a thermometer, or a bathroom scale. But these days, health trackers are a lot more ...

Researchers at Qingdao University in China have developed a lightweight, self-powered eye-tracking system designed ...

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Ever since I got my first GPS running watch in the early days of fitness trackers, I’ve always had something on my wrist during workouts. The Garmin Venu 2 is just the latest in a whole load of ...

After living with activity trackers meant to help him stay fit, columnist Danny Sullivan finds "big data" didn't translate into more motivation. Danny Sullivan is a journalist who has covered the ...

Whoop, a fitness-and-health tracker with a dedicated following of athletes and fitness enthusiasts, just released its latest low-profile device: the Whoop 4.0. And while you can wear it the ...

With smart phones and tiny self-trackers like FitBit and DirectLife you can measure every movement and moment consumed – from time spent in REM sleep and calories ingested to mundane tasks like ...

Objective To determine the effectiveness of physical activity interventions involving mobile applications (apps) or trackers with automated and continuous self-monitoring and feedback. Design ...

Although I don’t remember when I put my fitness tracker into long-term storage, I certainly recall the reason: It made me doubt myself. Like many people, I’d started wearing a tracker—in my case, a ...

Mood trackers are wearables, apps, or journals that use metrics to keep tabs on your emotions. They can be used to explore how your environment, stress, and activities affect your mood. Some tracked ...