Augmented Reality in our daily lives?

I found an interesting article from my twitter feed that showcases a video the possibilities of integrating augmented reality (AR) into the real world. It's another video from Keiichi Matsuda (he has an exhibit at the Modern Wing at the AIC). Rather than viewing AR from a mobile device or a computer screen, we can actually see it all around us. Just like the article asks, will this be through special glasses? Will we be the only ones able to see it? It will have to so people nearby don't read our emails or private messages. And another good question, how would AR be displayed, especially the ads littered on the sidewalks from the video? Holograms come into mind and we've already developed certain technologies that incorporate this. How far would this become into a real and usable medium? I can see a lot of potential for this technology, especially in a learning environment (remember this scene in Iron Man 2?).