Deanonymization via Activity Heatmaps
Sports platforms aggregate GPS data from smartwatches to build global maps of popular routes. If a user profile is public, anyone can match a workout start time with a regular schedule, determining exact home departure times and working hours.
How to Hide Personal Data in Fitness Apps
- Enable privacy zones around home and work in your fitness platform settings
- Switch profile visibility, workout lists, and activity maps to private mode
- Disable sharing precise geo-data with third-party social networks and ad integrations
- Hide name and surname displays on public leaderboards and challenge pages