Privacy notice

Camera frames and derived data

Camera frames are processed on the local PC.

Frames are processed in memory to derive facial landmark coordinates, confidence values, yaw, pitch, roll, translation, calibration features, and mapped output.

Local session JSONL logs

Technical JSONL logs are written locally. Up to 10 recent logs are retained. They can contain raw facial landmark coordinates, head pose, features, calibration and performance diagnostics, frame timing, and technical errors.

These logs are not anonymous. Review and redact them before sharing.

Profiles, preferences, and recovery state

Saved calibration profiles are separate from session logs. They can contain fitted model weights, normalization values, calibration targets, and camera index. Camera and shortcut preferences are separate local settings.

FreeTrack direct also keeps local NPClient recovery state so the app can attempt to restore the current user’s prior registry value after Game Mode.

Output paths

Supports FreeTrack direct shared-memory output.

Supports opentrack UDP; the default endpoint is 127.0.0.1, while a configured non-loopback host receives mapped pose/output data.

Inspection and deletion

There is currently no in-app clear-logs control. To remove session logs, close the app and delete only log files from%LOCALAPPDATA%\HeadGazeCalib\sessions. This guidance does not apply to profiles, preferences, or recovery state.

Review and redact logs before sharing them.

Questions

Contact info@bugfactory.hu about this notice or the app's local data handling.