Security Cameras, Do They Deter Crime?
Closed Circuit TV (Security Camera) was developed partly in response to IRA bombings in the United Kingdom. Experiments in the U.K. during the 1970s and 1980s (including outdoor CCTV in Bournemouth in 1985), led to several larger trial programs in the early 1990s. These were deemed successful in the government report "CCTV: Looking Out For You", issued by the Home Office in 1994, and paved the way for a massive increase in the number of CCTV systems installed.
Today, systems cover most town and city centres, and many stations, car-parks and estates. The exact number of CCTV cameras in the UK is not known but a 2002 working paper by Michael McCahill and Clive Norris of UrbanEye [1], based on a small sample in Putney High Street, "guesstimated" the number of surveillance cameras in private premises in London as around 400,000 and the total number of cameras in the UK as around 4,000,000. The UK has one camera for every 14 people.
Claims that they reduce or deter crime have not been clearly borne out by independent studies, though the government claims that when properly used they do result in deterrence, rather than displacement. One clear effect that has been noted is a reduction of car crime when used in car parks. Cameras have also been installed in taxis to deter violence against drivers, and also in mobile police surveillance vans. In some cases CCTV cameras have become a target of attacks themselves.
The use of CCTV in the United States is less common, though increasing, and generally meets stronger opposition. In 1998 3,000 CCTV systems were found in New York City.
The most measurable effect of CCTV is not on crime prevention, but on detection and prosecution. Several notable murder cases have been solved with the use of CCTV evidence, notably the Jamie Bulger case, and catching David Copeland, the Soho nail bomber. The use of CCTV to track the movements of missing children is now routine.
After the bombings of London on 7 July 2005, CCTV footage was used to identify the bombers. The media was surprised that few tube trains actually had CCTV cameras, and there were some calls for this to be increased.
On July 22, Jean Charles de Menezes was shot dead by police at Stockwell tube station. CCTV footage has debunked some police claims. [7] Because of the follow-up bombing attempts the previous day, some of the tapes had been supposedly removed from CCTV cameras for study, and they were not functional. The use of DVR technology may solve this problem. (Wikipedia)
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