Each video is tracked (unless it already has been) and its motion capture saved on its own, named after the video.
Formats
More settings
OAK camera
Show
Palm Orientation, Explained
YawTurning the hand left or right — like shaking your head "no." Shown in the arrow's direction on each card.
PitchTilting the palm up or down — like nodding your head "yes," or tipping a tray forward/back.
RollRotating the hand like turning a doorknob — this is what flips between "palm facing you" and "back of hand facing you."
Record
Takes are saved by themselves, in the export card's formats, in
Control your PC
Control this phone
Your hand moves a pointer over any app, like the hand mouse on a PC: a quick curl of your index finger taps, curl and hold it to drag (to scroll or swipe), a quick curl of your middle finger is a long press. Gesture actions can press Back, Home, Recents, volume and media keys, or type. It keeps going with Hand Tracker in the background: a small camera window stays in a corner (its × stops it).
"Restricted setting"? Android 13 and later block this for apps installed from a downloaded file. Tap Open App info, then ⋮ (top right) → Allow restricted settings, and confirm with your PIN or fingerprint. Then tap 2. Turn on hand control in Accessibility again. (⋮ offers it only once the "Restricted setting" box has appeared; installing a newer Hand Tracker keeps it allowed.)
On your Android phone, open Hand Tracker, then Control your PC → Scan the PC's code. The phone and this PC need to be on the same network (allow Hand Tracker through the firewall if asked). Or type this code on the phone:
Export Video
Formats
Export Motion Capture
Formats
Several cameras at once
Each camera gets its own hand tracker and its own tile, side by side. Motion capture records them all together, on one clock.
Track a screen or window
Pick the window to track, for example OptiTrack Motive with a camera's view showing. Motive keeps the cameras to itself, so this is how Hand Tracker can use them while Motive runs.
Drag a box around the part to track, such as one camera's view, or track the whole window.
Live rigs
Watch a capture rig's camera live and track the hands in it, as your capture-fleet dashboard shows it. Enter the dashboard's address once; it's kept on this computer.
opens the dashboard's own sign-in page
Pick a camera to watch it and track its hands; pick it again to go back to your camera. Rigs recording now are listed first, and can always be watched. The pictures are the dashboard's previews (full-size keyframes where the camera has them): a new one every second or two, so hands jump between pictures. Nothing on the rig is changed.
Capture sessions
Track recorded sessions from your capture-operations dashboard. Enter its address once; Hand Tracker reads how to reach its data from the site itself and keeps that on this computer.
Sign in with your dashboard account.
opens its own sign-in page; the easiest way
Or here:
Track these cameras:
Save as
Luxonis OAK camera
With an OAK camera (OAK-D, OAK-D Lite, OAK-1…) the hands are found on the camera itself, and an OAK-D also measures each hand's distance. It needs a one-time setup: Hand Tracker downloads its own copy of Python 3.12 with Luxonis's depthai library, OpenCV and NumPy, and the camera models (about 150 MB, into its own folder; nothing else on your computer changes). The tracking code comes from geaxgx/depthai_hand_tracker.
Live 3D Hands + Simulated Grippers
Blue = left hand • Orange = right hand • Each hand drives its own simulated gripper • Drag to rotate the view
Several cameras
OptiTrack Motive
Receives Motive's live markers, rigid bodies and skeletons (Motive: View → Streaming Pane → Broadcast Frame Data). They're recorded with motion capture and exported alongside it.