There is a lab that has developed a prototype contact lens that can superimpose basic text. It’s still early, but the potential is to create something like the terminator had.
For example, when you see someone who is in your contact list, it could superimpose his or her profile information. You'd never forget someone's name again. Or when you look at a building, it could tell you what the building is. You could even get your GPS directions when you are walking down the street.
I’m not sure what I think of this. It could just be too much for me.