Bip39 Seed Generator. Is passphrase the same as PIN? No, a passphrase is not really similar to a PIN. A passphrase, inside the context of Bitcoin wallets, is an additional layer of protection on your wallet that actually works along with your seed phrase to encrypt and guard your wallet. https://crossbookmark.com/story18915396/bip39-mnemonic-https-linktr-ee-bip39-5-easy-facts-about-bip39-generator-described