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They also use DSSS Direct Sequence Spread
Spectrum technology to ensure a secure connection while minimizing interference from competing wireless devices. Wireless security cameras are becoming more and more popular in the consumer market, being a cost effective way to have a comprehensive surveillance system installed in a home or business for an often less expensive price. Wireless cameras are also ideal for people renting homes or apartments. Since there is no need to run video extension cables through
walls or ceilings from the camera to the receiver or recording device one does not need approval of a landlord to install a wireless security camera system. Additionally, the lack of wiring allows for less "clutter," avoiding damage to the look of a building. If you own a wireless security camera, chances are that you bought it to keep your home and family safer. However, you may just be swapping one security risk for a whole cadre of even worse ones. Some of the most popular consumer grade security cameras on the market are wide open to cyberattacks, and even the good ones don't necessarily offer perfect protection or interfaces. The D Link DCS 2132L security camera. Madgeburg, Germany based security firm AV TEST evaluated eight popular IP cameras broadly speaking, Wi Fi dependent security cameras that communicate with mobile apps whose manufacturers ranged from D Link to Logitech to Netgear. Only three cameras were vulnerability free, and even they had room for improvement.
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Closed circuit television was gradually replaced by pay per view home cable television in the 1980s and 1990s. In September 1968, Olean, New York was the first city in the United States to install video cameras along its main business street in an effort to fight crime. Another early appearance was in 1973 in Times Square in New York City. The NYPD
installed it in order to deter crime that was occurring in the area; however, crime rates did not appear to drop much due to the cameras. Nevertheless, during the 1980s video surveillance began to spread across the country specifically targeting public areas. It was seen as a cheaper way to deter crime compared to increasing the size of the police departments. Some businesses as well, especially those that were prone to theft, began to use video surveillance. From the mid 1990s on, police departments across the country installed an increasing number of cameras in various public spaces including
housing projects, schools and public parks departments. CCTV later became common in banks and stores to discourage theft, by recording evidence of criminal activity. In 1998, 3,000 CCTV systems were in use in New York City. The studies included in the meta analysis used quasi experimental evaluation designs that involve before and after measures of crime in experimental and control areas.