Laser Projection Virtual Keyboard
http://www.gearbest.com/bluetooth-keyboard/pp_75339.html?currency=USD&gclid=COe8rNmP1cECFbNj7AodJXYAEA
http://www.ladiesgadgets.com/innovative-projector-uses-holographic-laser-projection-to-enable-virtual-touch-screen/
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