Running on smartphones and tablet computers, AR overlays digital information - text, graphics, games -- on images of the world around us. Some executives in the mobile industry think AR will be huge. While revenues from AR alone amount to no more than a few tens of millions of dollars, that number is set to double annually to reach $350 million in 2014, according to New York-based ABI Research. The impact across the broader mobile and computer industry could be much bigger, convincing consumers to use their mobile devices even more than they already do.