A passphrase acts as an extra layer of security for your Trezor wallet, unlocking a hidden wallet within your standard one. By using different passphrases, you can access multiple wallets. Without the correct passphrase, only your standard wallet is visible, but with it, the associated hidden wallet can be unlocked easily.
Remember that the passphrase is not stored on your Trezor device, adding an extra level of protection. If you lose your device, you can easily recover your hidden wallet by purchasing a new one, importing your backup, enabling the passphrase feature, and entering the correct passphrase. Just ensure that you store the passphrase securely and share it only with trusted individuals if necessary.
