Advanced forensic techniques for recovering hidden data in wearable devices

This report demonstrates how forensic techniques can recover and analyze extensive user data from Fitbit devices and the companion app—such as deleted messages, sleep logs, activity metrics (including heart rate), and precise second-by-second GPS traces—by inspecting app databases and account artifacts. It visualizes movement patterns, correlates activities with locations, and shows how account access logs and identifiers can be extracted, underscoring significant privacy and security risks from default-enabled tracking features. The report also discusses ongoing GDPR-related privacy complaints and provides practical steps to reduce data exposure by disabling SmartTrack, GPS, location permissions, and all‑day sync.