Bip39 Seed Phrase. Is passphrase similar to PIN? No, a passphrase isn't similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an additional layer of security on your wallet that actually works alongside your seed phrase to encrypt and secure your wallet. A PIN, Then again, https://social-lyft.com/story8472392/bip39-wallet-https-linktr-ee-bip39-getting-my-ian-coleman-bip39-to-work