"Displax developed by Edigma combines rear projection holographic screens with finger tracking to bring interactive storefront displays to retailers and various commercial applications. Displax® - Interactive Window allows human interaction in a shop window, with multimedia applications, emission and record of sounds, detection of human presence in front of the display, etc."
Not exactly hot news as this product came to market in 2004 from the Portuguese company Edigma. But cool technology that you can just see soon making its way into the High Street.
The photo's hot, though.