Bip39 Seed Phrase. 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 additional layer of stability to your wallet that actually works together with your seed phrase to encrypt and shield your wallet. https://tornadosocial.com/story4880623/ian-coleman-bip39-https-linktr-ee-bip39-the-fact-about-bip39-words-that-no-one-is-suggesting