"At last year’s I/O developer’s conference, Google showed off a new augmented reality feature for Google Maps, which would provide people with directions from your phone’s camera in realtime. As my colleague Chaim Gartenberg noted, it’s a bit like what was promised with Google Glass, but without the headset. The Wall Street Journal’s David Pierce got to try out an early version of the feature.Google is letting some users test its AR navigation feature for Google Maps | The Verge
He says that while it “isn’t likely to be your primary turn-by-turn option, it’s a huge step in the right direction for Google Maps.” He described how the feature worked — the app picks up a person’s location via GPS, and then uses Street View data to narrow it down to your exact location. Once his location was pinned down, it displayed big arrows and directions in his screen. “It was as if Maps had drawn my directions onto the real world, though nobody else could see them.”"