### Explanation Health trackers (fitness trackers, activity trackers) are applications (devices) that monitor and record various health-related metrics: physical activity, heart rate, sleep patterns, location data. Trackers could be a source of valuable information like patterns and habits, geolocation, social links and groups. ### Examples - [Fitness tracking app Strava gives away location of secret US army bases](https://www.theguardian.com/world/2018/jan/28/fitness-tracking-app-gives-away-location-of-secret-us-army-bases) - [OSINTCurio.us: Strava - You Can Run, But You Can’t Hide](https://www.osintcurio.us/2022/01/24/you-can-run-but-you-cant-hide/) ### Types {{ business | technical | behavioural }} ### See also - [[SOFL-4. Maps]] ### Weakness - [[SOWEL-5. Exposing The Fact Of Activity]] - [[SOWEL-16. Appearing In Local Sources]]