Researchers at Carnegie Mellon University and Disney Research have developed a conductive paint that can turn any wall smart. The paint makes the walls interactive and context aware sensing. The walls can sense human ouch, gestures and appliances being used.The conductive paint allows placement of electrodes across the walls. And that opens up a whole new world. For instance, the walls can control video games when given a human gesture. They can serve as household monitors such as letting you know your laundry is done or turning off lights.The researchers have a vision for this tech. Given the Internet of things and ubiquitous computing coming on fast, it's giving walls an active part in our living and work environment. In terns of cost, they convert dumb to smart walls on the cheap. About $20 per sq. meter and use simple tools and techniques like a paint roller.The electrodes in the walls are hidden by a top layer of regular paint. And the amount of energy used by a wall is about the same as that of a touchscreen. Amazing tech and it's just the beginning!