A system for generating and altering an image display using live camera input. A camera coupled to the display and to a controlling computer system detects a person observing the display and displays the person observing. The computer system controls the display and includes a processing system capable of modifying the captured digital image to illustrate the person using a product. The system can be disposed in a storefront window for viewing by persons in a public space and the camera is disposed to capture an image of the person in the public space.