I very optimistic about what AR can bring. To me, the biggest roadblock for AR as well with VR, is user interacting with the digital world constrained by the physical one (a problem that's been recognized since the beginning).

Even in AR you do not have haptic feedback, this to me is a critical component for a system to be truly adoptable outside of niche domains such as surgery, industrial processing etc.

I am sure many people are think of this. I have seen some research work out of the Media Lab at MIT trying to address this problem with deformable tables, likewise a Japanese group was doing air pressure haptics.

Could anyone working in this space comment on some state of the art stuff? And provide links? Thanks in advance.