Bip39 Seed. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of protection for your wallet that actually works alongside your seed phrase to encrypt and secure your wallet. A PIN, https://socialwebconsult.com/story4069295/bip39-https-linktr-ee-bip39-the-fact-about-bip39-words-that-no-one-is-suggesting