British Broadcasting Corporation

Page last updated at 08:06 GMT, Tuesday, 2 December 2008

Crime gadget now annoys all

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A device designed to move on would-be criminals has been updated so as not to discriminate against the young.

But it is still being criticised by civil liberty campaigners.

The Mosquito emits a high-pitched sound and has been designed for use in potential crime hotspots such as subways and underground car parks.

Sarah Campbell reports.

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