QR codes may be fiddly and useless at the best of times, but that doesn't mean there's no room to have fun with the medium. As part of a Facebook Hackathon, some workers at the company took it upon themselves to paint a huge, 42-foot wide QR code on the roof of a company building. After taking an aerial photograph with a homemade quadcopter and a Canon point-and-shoot to check that it's actually possible to scan 2-foot pixels, the image has been uploaded to Facebook itself. Where does it take you? A new page at the URL http://fbco.de, which doesn't have much of anything on it right now beyond a "coming soon" message — Facebook promises "something cool" in the pipeline.