URL: https://docs.unity3d.com/ScriptReference/XR.InputDeviceCharacteristics.TrackingReference.html
ataLayer-initialized', user: { user_unity_id: undefined, user_logged_in: 'no' }, environment: { environment_locale: 'en-us', environment_currency: undefined }});The InputDevice is an unmoving reference object used to locate and track other objects in the world.