We’re not saying you have anything to hide. But if you did, the tiny and discreet Covert Coin would be the perfect vessel. Machined from real coins and designed to carry a micro-SD card, these ordinary looking coins can only be opened with a special device.
Spy coins have been used since the Cold War era or before, and now you can have your own secret carrying device. Available for $24 in either US quarter or Euro 50 cent piece from Uncrate: