Anyone who has tried the HTC Vive or Oculus Rift is blown away. The HTC Vive has "trackers" which are similar (in function) to the Vive wands but are much smaller. You can attach them to any object and depending on the game, bring it right into the virtual space with you. This could be great for tracking pets in the play area,and incorporating real life objects into the game world. In this video I am using the HTC Vive trackers to track my feet and shoe in Climbey.