Bip39 Words. Is passphrase similar to PIN? No, a passphrase will not be the same as a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of safety in your wallet that actually works together with your seed phrase to encrypt and secure your wallet. https://madesocials.com/story4857294/bip39-passphrase-https-linktr-ee-bip39-top-guidelines-of-bip39-words