Bip39 Tool. Is passphrase similar to PIN? No, a passphrase isn't similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety to your wallet that actually works along with your seed phrase to encrypt and guard your wallet. A PIN, However, https://wiishlist.com/story20016984/bip39-words-https-linktr-ee-bip39-bip39-generator-an-overview