Bip39 Mnemonic. Is passphrase the same as PIN? No, a passphrase isn't similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of security for your wallet that actually works along with your seed phrase to encrypt and shield your wallet. A PIN, on https://checkbookmarks.com/story4203000/bip39-wallet-https-linktr-ee-bip39-5-simple-statements-about-bip39-mnemonic-explained