They could literally just slap a LeapMotion on it and be one-up on Oculus and Vive for the types of interactions that would be useful in AR.
I've used the LeapMotion in VR and it's amazing. The VR headset controllers work well for their purpose, gaming - low latency, high reliability, high freedom of movement (can put it behind you etc.), and having physical buttons. But the LeapMotion tracks your fingers and feels really natural - without holding anything or placing trackers.
I've used the LeapMotion in VR and it's amazing. The VR headset controllers work well for their purpose, gaming - low latency, high reliability, high freedom of movement (can put it behind you etc.), and having physical buttons. But the LeapMotion tracks your fingers and feels really natural - without holding anything or placing trackers.