title: How to convert a position into starting point for app using unity and ARKit?
body: <p>Trying to develop an AR app.When the app is opened,at that point the device location is (0,0,0) that is if I print or display my coordinates it will be (0,0,0).I want to create a starting point like at the entrance of a door.When other users using my app can open the app anywhere.</p>
  
  <p>What I am trying to do is I already kept an AR at the entrance of the door.Users open app at random position which become their starting point, all AR objects will appear.When they  pass through the AR object ,I want the coordinates of their device be(0,0,0).But if I run the below code in unity editor it <strong>takes the camera</strong> to the position where app has started.I am looking to convert the entrance position into App starting point.</p>
  
  <pre><code>            Camera.main.transform.position=new Vector3(0,0,0);
  </code></pre>
  
  <p>From what I understand if we change the position of camera in app it can show glitches </p>