????For a product that's not widely available yet, Google Glass has generated an incredible amount of buzz. It's not hard to see why. The augmented reality eyeglasses, which project images onto a lense, represent a major step forward in computing, much in the same way the iPad made tablets a common household item. When it arrives later this year, users will be able to snap photos, record video, and otherwise enhance their surroundings, from offering on-the-fly directions superimposed onto the road or reviews for a restaurant someone is looking at.