Bip39 Standard. Is passphrase similar to PIN? No, a passphrase is just not the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an additional layer of security towards your wallet that works along with your seed phrase to encrypt and shield your wallet. A PIN, https://bookmarksknot.com/story20464629/bip39-https-linktr-ee-bip39-about-ian-coleman-bip39