Called the Interactive Shop Window the system consists of a flat screen monitor and a motion tracker positioned behind the glass of a store's front window.

When window-shoppers stand in front of the window, they can point at a product they want. Then the display box holding the product will light up and information for the object will be shown on the screen. Window-shoppers can then view it in different colors or sizes, or learn more about it.

the Interactive Shop Window in action.

The system is controlled by the window-shopper's gestures, which are captured using motion tracking technology that the Fraunhofer team has been working on for a decade.

The institute is looking for partners to further the technology and one day change the look of department store windows.