Law enforcement officials point to high-tech tools used to fight crime as a key reason why the national crime rate has decreased. But with the increased use of such technologies comes an increased risk to privacy, CBS News reports. In Chicago, for example, officials estimate the number of privately and publicly used surveillance cameras to be around 15,000, capable of zooming in to read a license plate. Jim Harper of the Cato Institute says the cameras invade privacy, recording people daily without their knowledge. "As these cameras network together, and as they are better capable at recognizing individual faces," he says, "people will realize just how they are being watched."
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