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circa 1968:  A man placing a tap in a phone.  (Photo by MPI/Getty Images)
circa 1968:  A man placing a tap in a phone.  (Photo by MPI/Getty Images)

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    Wiretapping: The one thing you need to know

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Wiretapping: The one thing you need to know

CNN's Danny Cevallos explains the history and usage of surveillance in America.

Wiretapping: The one thing you need to know

CNN's Danny Cevallos explains the history and usage of surveillance in America.