11:45PM Jesus Diaz | Back in the good old days of the Cold War, spies didn’t have encrypted mobile phones or digital thingamajigs to do their thing, so they did their spy business with classic spy stuff like spy camera-pens, spy shoe transmitters, spy bacon strips, and messages encoded on their spy underpants. Or these Hollow Spy Coins, which were used by the CIA and the KGB to hide poison or microfilms. Now you can buy them to store whatever is small enough to fit in them, like discarded nail bits. The coins are still in use by modern spies, however: Last year, the US Department of Defence cautioned its American contractors about hollow Canadian coins containing radio transmitters.
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