Disney Research engineers have developed PaperID, a technology consisting of ultra-thin, battery-free Radio Frequency Identification (RFID) tags that can be turned into simple paper input devices. It uses sensing and signal processing techniques to determine how a tag is being manipulated by the user via an RFID reader and show how tags may be enhanced with a simple set of conductive traces that can be printed on paper, stencil-traced, or even hand-drawn. These traces change the behavior of contiguous tags to serve as input devices. These capabilities allow new interactive possibilities for pop-up books and other paper craft objects. Click here for the first image in today's viral picture gallery. Continue reading for the five most popular viral videos today, including one showing exactly how rubber bands are made.