I created a default Xcode ARKit App. When I ran it, I could see the spaceship object. I could also walk around it and watched it from different angles. Now I added my own 3D object model, downloaded from https://www.turbosquid.com/3d-models/free-billboard-games-3d-model/1129110. It showed up in my App. If I walked around it, however, the object was also moviing. So I could not see it's back side. Why? Is there any configuration I need to set on the model file?

I found iOS CoreLocation trueHeading not accurate. Accutally, it was off a lot. When I point the iPhone to north, it reported a heading of 250 degree. Why?Here is my code to setup location Manager: locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestWhenInUseAuthorization() locationManager.startUpdatingLocation() locationManager.startUpdatingHeading()Here is my code to retrieve the heading:func locationManager(_ manager: CLLocationManager, didUpdateHeading newHeading: CLHeading){ let heading = newHeading.trueHeading; print(heading) radarView.heading = Float(heading); radarView.setNeedsDisplay(); }

I uploaded an App to itunesconnect and would like to use it for beta testing. There was a yellow "Missing Compliance" next to the version complaining about "Provide Export Compliance Information". I clicked that and selected "No encryption" and "Begin internal testing". However, ituneconnects always say "Sorry, something went wrong. Try again later. If the problem persists, contact us". I tried for a couple days, it always give me the same error. Why?

I am interested in building some outdoor traffic/driving related apps. Can Vision pro used outdoor with rebliable position estimate?