Bip39 Ian Coleman. Is passphrase similar to PIN? No, a passphrase is just not the same as a PIN. A passphrase, from the context of Bitcoin wallets, is an additional layer of security for your wallet that works alongside your seed phrase to encrypt and defend your wallet. A PIN, https://thebookpage.com/story4429087/bip39-wallet-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained