Meet the Scribit robot: an app controlled drawing and writing robot that can leave notes and drawings on glass and plaster in various colors. It can also erase drawings on its own. The Scribit drawing robot writes in 8 colors. Simply hang it on its metal wire from two nails, plug it in, and use the app to select a design.
Carlo Ratti is the designer behind this robot. Scribit can draw maps or any other image on your phone. The below video shows it in action:[HT]