Un estudio financiado por el Ministerio del Interior británico concluye que los sistemas de videovigilancia apenas tienen impacto en la tasa de criminalidad cuando se instalan en los centros de las ciudades.

The review of 44 research studies on CCTV schemes by the Campbell Collaboration found that they do have a modest impact on crime overall but are at their most effective in cutting vehicle crime in car parks, especially when used alongside improved lighting and the introduction of security guards.
Via BoingBoing (negritas mías).

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