title: Consistency for MRTK2's IMixedRealityPointerHandler
body: <p>The raw position and rotation data of the <code>IMixedRealityPointerHandler</code> output isn't consistent across all users with the same hand gesture-- what strategies can we use to make this more consistent over various users? Does the device train to a specific eye calibration more accurately over time i.e. does more time in the device = better eye/hand tracking for that user?</p>