White light ‘blinds’ film pirates

Posted on June 22, 2006 

White light ‘blinds’ film pirates

A device that could foil movie pirates who covertly record films in cinemas has been developed in the US.

The prototype is able to locate the position of a digital camera, before overwhelming it with white light to render any recorded images useless.

The technology works by looking for the digital camera’s image sensor known as a charge-coupled device (CCD).

These silicon sensors are retroreflective, which means that they reflect light directly back to its origin, rather than scattering it.

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