[stereolambda]

I think a better overview is under the "Towards a folk computer" link on the main page (perhaps the submission link should be changed?). Essentially (if I understand correctly) they want to let you control computer by moving things in the physical world: mainly items on a real tabletop. Sort of anti-virtual reality, in a way!

[atrus]

Not to sound dismissive, because this is cool, but this pretty solidly AR, just instead of a headset you're using a projector. I don't think it'd be too difficult to port this to vr headset of choice

[staplers]

Headsets are in many ways a less cool version of our own eyes.

Also, this would be helpful for the sightless.

[codetrotter]

Tangible Computing :D

[__loam]

Someone get Tim on the line to look into this.