Hollow Spy Coins Are Perfect Metaphor of Current Economy [Low-Tech Spy Gadgets]
...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 Defense cautioned its American contractors about hollow Canadian coins containing...
