Hardware wallet

A dedicated physical device that generates or imports private keys and signs transactions internally, keeping the keys from being exposed to the connected computer. Keys are typically stored in protected hardware, often a secure element. Access is usually protected by a PIN, and some devices erase stored secrets after repeated incorrect attempts. Seizing the device does not necessarily provide access to the funds or immobilize them: the seed phrase backup, any additional passphrase, and other copies of the keys may provide independent access.