Hard Rock Cafe in Las Vegas recently unveiled a massive 18′ wide by 4′ tall rear-projection, multi-touch, multi-user interactive wall for showcasing its rock’n’roll memorabilia collection.  Developed by Obscura Digital, a San Fransisco-based “digital design and technology marketing agency,” the wall uses three 1920 pixel HD projectors along with some serious graphics processing power to render a huge number of images and video clips with live multi-touch manipulation.

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