Bip39 Standard. Is passphrase similar to PIN? No, a passphrase isn't the same as a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of security in your wallet that actually works together with your seed phrase to encrypt and secure your wallet. A PIN, https://yoursocialpeople.com/story4767292/bip39-wallets-https-linktr-ee-bip39-bip39-words-fundamentals-explained