Bip39 Ian Coleman. Is passphrase the same as PIN? No, a passphrase just isn't the same as a PIN. A passphrase, inside the context of Bitcoin wallets, is an extra layer of security towards your wallet that actually works along with your seed phrase to encrypt and shield your wallet. https://bookmarkyourpage.com/story5030176/bip39-https-linktr-ee-bip39-helping-the-others-realize-the-advantages-of-bip39