A deep look at the evolution of visual surveillance technology, where it is headed, and what its continuing rise will mean for security, transparency, privacy (Robert Draper/National Geographic)

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Robert Draper / National Geographic:
A deep look at the evolution of visual surveillance technology, where it is headed, and what its continuing rise will mean for security, transparency, privacy  —  London authorities were early adopters of widespread closed-circuit television (CCTV)  —  surveillance after the city was targeted …