Bip39 Passphrase. Is passphrase similar to PIN? No, a passphrase is just not the same as a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of security to your wallet that actually works along with your seed phrase to encrypt and secure your wallet. https://letusbookmark.com/story21413741/bip-39-https-linktr-ee-bip39-a-secret-weapon-for-bip39-mnemonic