"Hi, I'm the creator of this app. I live in San Francisco and root for the Giants, which is why the video takes place at AT&T Park. The Glass screen is much more transparent and out of the way when you're actually wearing the device. The whole point of building this app for Glass was to present this kind of data without obstructing your view of the game. The screen sits slightly outside of your field of vision. Depending upon where you're sitting in the stadium, you may not even be able to see the scoreboard, so this could help. Also, at AT&T Park, their pitch speed display only shows up for 1 second before they take it down to discourage pitchers from worrying about it. It's easy to miss." - Aaron Draczynski