Thanks, yes i follow, and spatial anchors must surely be the answer as they are in the real world environment which is what we’re interested in. SteamVR has those tracking pucks which are used for motion platform compensation and they may achieve something similar. The other thing i’m curious about is how accurately 3d space in a sim cockpit maps to realistic dimensions. There’s been a lot of discussion about real world scale and the fact that the cessna yoke for one seemed baby sized. I think its been better recently but still… to be prgmatic though,as long as hand tracked virtual interaction was correct then a little error in physical object placement would be no big deal i feel. You could fumble a bit to get a proper grip of something.