High-definition TV in 3D – and no glasses

Tucked away in the Sound and Vision department of Harrods is a 42in LCD television set. As a not-for-sale display model, it draws only the occasional glance from the tourists and Christmas shoppers packing the store. Despite its unexceptional looks, though, this item of hardware offers the answer to that great unsolved problem of technology: 3D TV.

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