Billed as Times Square's largest and most expensive digital billboard, a new megascreen is debuted in front of the Marriott Marquis hotel on November 18, 2014 in New York City
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Huge eight storey billboard takes over Times Square

A giant billboard about a length of an American football field has been switched on at New York's Times Square.

It is being described as the world's biggest and most expensive digital billboard.

Mike Embley reports.