Bip39 Passphrase. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an additional layer of stability towards your wallet that actually works together with your seed phrase to encrypt and secure your wallet. A PIN, https://letsbookmarkit.com/story18983012/bip39-https-linktr-ee-bip39-bip39-words-secrets