We've seen all sorts hip-cool interactive window installations, usually comprised of a camera for a modicum of interactivity and a projector or a display for screening the results. The Salling store in Arhus, Denmark is taking things a bit further and making the window itself interactive. There's still a camera to sense motion, but instead of a display there's some fancy window tech that makes sections of the glass transparent or not based on where the person is standing. Sure, the idea of having to walk up to a window and wave your arms around to reveal what's behind it might seem a bit counter-intuitive, but at least it'll give the loiterers something to do. Video is after the break.

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