Here’s a promo video of the Acrossair augmented reality browser. Using the iPhone 3GS camera, GPS, compass and Google Maps, this browser gives the user a sort of info HUD of the shopping and entertainment availabilities around them. By clicking on a category such as “restaurants”, the user can actually turn and see what eateries are around them in the surrounding area. You can also lay the iPhone flat to get a Google Maps view that also maintains the correct orientation no matter where you turn. Just watch the video, it’ll make a lot more sense: