It has since been imitated around the world, notably by Vodafone, with its live!

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Its application can scarcely be described as wide, but it could one day be used to great effect in horror films and has already been imitated once in such a context.

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Are you getting the idea of why this policy has been so widely imitated?

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As New York's crime rate has plunged, its policing methods have been widely studied and imitated, not only in America but also abroad.

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