Bip39 Mnemonic Generator. Is passphrase similar to PIN? No, a passphrase just isn't similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of stability for your wallet that actually works together with your seed phrase to encrypt and defend your wallet. A PIN, https://topsocialplan.com/story4177161/bip39-wallets-https-linktr-ee-bip39-the-fact-about-bip-39-that-no-one-is-suggesting