Coldbit Passphrase is a durable solution for your wallet passphrase backup.
It’s made of a hexagonal stainless steel rod and allows to safely backup and store up to 6 different passphrases.
Each passphrase can store up to 4 – 6 words (depends on their length).
You can read more about BIP-39 passphrase security here.
After stamping your passphrases store it in a safe place away from your wallet seed backup.
Your wallet passphrase is the ultimate protection of your funds. If someone finds both your wallet seed
and your passphrase your funds are likely to be stolen.