they are in shopping centres at ATMs outside buildings and even on our roads and motorways they are operated by the police and private security companies. By capturing criminals on film they hope to discourage crimes such as muggings, shoplifting and carjackings. They also watch the roads for people speeding and more Using special floor tiles, computer are able to identify people from the way they walk.. They keep track of where toy are and waht you are doing all day. every day