To ensure that only North Korea's finest gamers are allowed across the border into South Korea, the South Korean military is now securing the DMZ (demilitarized zone) with Microsoft's Kinect sensor. Just kidding -- it has nothing to do with gaming, and all about keeping the border secure. It turns out that Kinect is a very good and cheap way to differentiate between animals and errant North Koreans trying to cross the border, and triggering automatic alerts at nearby South Korean military outposts if a human is detected.