Hand Tracking Lab

In the Quest: Put your controllers aside and make sure hand tracking is enabled. Hold both bare hands where the headset cameras can see them. Move and turn them slowly, then try covering a fingertip.

Lab 003: The purple line is the Quest's actual hand pointing ray (targetRaySpace), not the direction of your index finger. The sign shows its left/right heading and up/down elevation in the room's local coordinates, and its movement in degrees. With your fingers open (at least 70 mm apart), the lab keeps updating the original pointing direction. It holds that starting direction once your fingertips are within 50 mm. “At select” records how far the beam had moved when Quest recognized the pinch; “Peak before” remembers the largest change up to that moment. Values remain visible until a later recognized pinch. The gold line still measures thumb-to-index separation; green means the lab's 20 mm threshold, not Quest recognition. The pale finger-line shows the original index-finger direction.

Move and twist the readout: It starts to your left and stays in the room instead of following your face. Aim a hand's Quest pointing beam at the panel, pinch thumb and index finger to grab, then move your hand to reposition it and rotate your wrist to turn or tilt the sign. Release to leave it in place and at that angle. You can also pinch while touching the panel directly. It resets to its starting position and orientation each time you enter passthrough. Manipulating the panel does not change pinch calculations, although the grab pinch is counted.

Change experiments: use the Quest's built-in left-palm menu gesture to exit immersive mode. Look at your left palm, pinch thumb and index finger until the menu icon fills, then release. The experiment menu returns here. This reserved system gesture is not part of our lab.