Pavlov is correct, the tracking in ARKit and ARCore are just good enough for small mobile screens, and not good enough for anything immersive. Windows Mixed Re

Pavlov is correct, the tracking in ARKit and ARCore are just good enough for small mobile screens, and not good enough for anything immersive. Windows Mixed Reality headsets use AR tech for positional tracking, but the MR headset tracking is made for a maximum of room-scale experiences (as opposed to hololens which can go multi-room).