Google is trying its best to explain the uses of Google Glass, and how it could be helpful to the average user. You all must be aware of OK camera at eye level that’s capable of taking a photo faster than you could pull your phone out of your pocket, but for many that’s not enough. It seems that biggest untapped market for Glass is to behave as a second screen for the things going on when watching TV or playing games.
Mike DiGiovanni is the main developer or a native app writer for Glass and he was the one who first discovered, how to let Glass users take a photo with a blink, and has been working hard on other apps ever since.
There is also an issue regarding battery life, as the app keeps the the display on the whole time you play. DiGiovanni, however consoled that battery life would be significantly longer. It will wake the display only when something important occurs, something like the current GPS system.