Bip39 Seed Generator. Is passphrase similar to PIN? No, a passphrase is just not similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety for your wallet that actually works alongside your seed phrase to encrypt and protect your wallet. A https://webnowmedia.com/story4308744/bip39-mnemonic-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work