If you haven't already seen our demo of the 3DS' rather impressive bag of augmented reality tricks, then let us take this opportunity to show you -- once again -- why we're excited about the thing's AR capabilities. The folks over at software development firm Refactr have done some tinkering and found that all you need to make your very own 3DS AR card is a white board, some dry erase markers, and a projector. By tracing the outlines of that mysterious question mark card on to a shiny white surfac
