A cipher machine is metal, rotors, and a history that interests states. Whether you may own a particular device, you settle before the purchase. This text is not a way to obtain one. In the overview Security for collectors it is about storing what you lawfully have.

Storage

Dry, rotors not loose in a drawer where they disappear and rust. Each rotor one line. You do not fiddle "just for a moment" with a device whose wiring is the price, without knowing what you are changing.

When someone comes

Heavy, but the rotors are small. They stay in the device or in the locked box, not beside it. Proof and photos of the numbers in the document safe.