I've seen a live demo and it just completely blew me away, I had them swear the thing is real and not just a mock up, it was that good.

The number of real world applications for this is just about endless. Just a couple:

- overlay the location of underground pipelines on the ground above, no more cut pipes & cables

- automated guided tours

- hunt for real estate, complete with background information

- search for the nearest parking spot

- revamp the display of navigators like tom tom (overlay on glasses??)

and so on.