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One shed digital footprints every day. Using similar technologies to the ones that trackone, it is becoming easier to trace those footprints back tone. If one live in a city in which usage of video surveillance has become widespread, image and travel patterns are often recorded and stored. In London, there is 1 camera for every 14 people and an average Londoner is seen on camera 300 times each day. Although the U.S. has not yet approached that number of surveillance cameras, downtown Manhattan already has 4,200 public and private sector video cameras.
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