Bip39-Standalone. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an additional layer of stability on your wallet that works along with your seed phrase to encrypt and guard your wallet. A PIN, On https://ledbookmark.com/story5285196/bip39-wallets-https-linktr-ee-bip39-bip39-words-secrets