And I'm sure it works in real life JUST like it does in the video.

Looks cool. Guess it's the terminator view. Eventually they're hoping to get it to the point that a data block will float over people's head with name, age, and other data. (saw this in a video about Google's attempt a "augmented" reality.) We'll all be good at remembering names.
And privacy is something kids will hear about in history videos.