Sure, giant touchpads already exist, but what if you can transform a normal wall into an interactive installation? Meet "Wall++", a low-cost sensing approach that enable walls to become a smart infrastructure. Instead of just dividing rooms, these walls can now enhance rooms with sensing and interactivity. The hardware tracks users' touch and gestures, as well as estimate body pose if they are close. By capturing airborne electromagnetic noise, it can also detect what appliances are active and where they are located. Click here for the first image in today's viral picture gallery. Continue reading for the five most popular viral videos today, including a bad lip reading of "interrogating Zuckerberg".