Skin as an Interactive Canvas

In CACM:    Had seen some related examples of this.  An on-skin body input and display system.   Very clever thought.   Skin as an interactive canvas.  Abstract. Video below. " ... Skinput is a technology that appropriates the skin as an input surface by analyzing mechanical vibrations that propagate through the body. Specifically, we resolve the location of finger taps on the arm and hand using a novel sensor array worn as an armband ... "