Characteristics Coinkite OpenDime
Coinkite OpenDime is a hardware disposable Bitcoin wallet. It allows you to physically transfer cryptocurrencies like regular banknotes, and the recipient of the wallet can be absolutely sure that its previous owner does not know the private key.
The implementation is extremely simple and ingenious: each wallet contains one private key, but does not display it in any way. Even the owner of the wallet can only see the public key. That is, the address saved in the wallet can be replenished, but funds cannot be withdrawn. In order to find out the private key, you need a sharp object (for example, a needle) to damage the wallet board in a special area. Accordingly, the recipient of the wallet knows for sure whether the previous owner tried to gain access to the private key - damage cannot be masked.
That is, Coinkite OpenDime is a tool with an extremely narrow range of applications, but it is absolutely indispensable in its niche.