Bip39 Passphrase. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of protection in your wallet that actually works together with your seed phrase to encrypt and defend your wallet. A PIN, https://crossbookmark.com/story19223055/bip39-generator-https-linktr-ee-bip39-helping-the-others-realize-the-advantages-of-bip39