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The Best 'low-Tech' Spycraft Tricks

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Buttonhole camera

The F-21 buttonhole camera - as used by the Soviet Union, Europe, and North America in the early 1970s.

Credit: International Spy Museum

In the wake of Edward Snowden's revelations about the US National Security Agency’s activities around the globe, authorities in Russia and Germany declared they were investing in a foolproof counter-surveillance technology: mechanical typewriters.

From BBC News
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