View from a surveillance plane
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Should surveillance planes be used to fight US crime?

A US company has developed a way of monitoring entire neighbourhoods using technology originally developed during the Iraq war.

Persistent Surveillance Systems flies a plane with cameras attached to it to get round the limited view of conventional CCTV cameras.

Sumi Das visited the firm that is now looking to bring the surveillance system to urban areas.

Crime-fighting surveillance planes provoke privacy controversy

Watch more clips on the Click website. If you are in the UK you can watch the whole programme on BBC iPlayer.

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