Valve has produced a lot of important innovations in the gaming industry. They also built a gamepad you control with your butt. They're calling it a "posture-based game controller," but come on. That's a butt joystick, and you know it, Valve.
There's good news for those of you who just can't get enough of airport security this holiday season -- now, you can build your own backscatter X-ray machine, just like the one that ensures you're not bringing anything unsafe like nail clippers or a lighter onto the airplane. It's a little more cumbersome than a pair of X-ray specs, but as the video demonstrates, it's a pretty effective tool for seeing through things. Considering it was built entirely with parts purchased off of eBay, it's a pretty serious feat of DIY engineering, and we doff our caps to inventor Ben Krasnow, who will no doubt be scanning friends and family as they come through the door for his holiday party. Anything to avoid the Christmas pat down, right?