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Surveillance cameras are recognized as the standard in property monitoring and criminal detection. They are used by many government branches, businesses and by private homeowners.
Surveillance cameras have been primarily used for monitoring. Cities such as London have installed several surveillance cameras throughout the city as a means of deterring and capturing criminals. It has met with success, particularly in the area of car theft. Cities such as New York and Chicago are also beginning to use surveillance cameras throughout the city. Critics charge that this widespread use of surveillance cameras leads to a loss of privacy and strips citizens of their civil liberties. Critics have also charged that surveillance cameras are used more for social control than as criminal deterrents.
Originally surveillance cameras were analog, but these have been phased out in favor of digital surveillance cameras that transmit their data feed via WiFi technology to the Internet. From there a digital video recorder or a computer can view the feed with a specially configured Web browser. Digital video recorders are able to burn the stored data feed to a DVD-ROM.
Digital still surveillance cameras are also available. These are equipped with motion detectors that alert the camera to take a photo when any activity occurs. As digital cameras with memory cards can hold hundreds of photographs, this is an acceptable alternative to video surveillance cameras.
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