Hi HN, I'm Sten, one of the creators. We built this because we wanted 3D experiences without needing a VR headset. The approach: use your webcam to track where you're looking, and adjust the 3D perspective to match. Demo: https://portality.io/dragoncourtyard/ (Allow camera, move your head left/right) It creates motion parallax - the same depth cue your brain uses when you look around a real object. Feels like looking…
Systems like trackir, which require dedicated hardware.