While security services casually plunder cyberspace for people's faces, poor old Mr Plod has had to do it the hard way for the past 200 years. The Police 'Rogues Gallery' of faces is probably the greatest book never to go on public sale.
Ref: http://www.hngn.com/articles/25508/20140228/britain-spy-agency-gcqg-shared-yahoo-webcam-images-with-nsa.htm

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