Bip39 Seed Generator. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of protection for your wallet that actually works together with your seed phrase to encrypt and defend your wallet. A PIN, https://businessbookmark.com/story4066397/bip-39-https-linktr-ee-bip39-the-fact-about-bip39-wallets-that-no-one-is-suggesting