Christmas might be over, but you can still find out if you are naughty or nice thanks to Wieden + Kennedy London. Using the store front window from their London based offices, WK built an eight bit retro inspired Naughty or Nice o Meter and used it to grab passers by for a bit of Christmas fun. The video below shows how the set up worked, including a manual override function. At the end they give some stats about how many people participated and the end results. If you are in London you can still stop by and check it out, if not they have an online version here that you can use.