Window_projectionRear Projection film that can be mounted on any clear surface like store front windows from the inside to turn it into a projection screen for dynamic signs. This is a break through invention to window marketing. With the help of this rear projection window film, you can display images, motion graphics and video to get the attention of the outside world. A stand-alone system requires a projection surface with rear projection film, a digital projector‚ a PC or media player with software and display content.