Bip39 Standard. Is passphrase the same as PIN? No, a passphrase is just not similar to a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of protection to your wallet that works alongside your seed phrase to encrypt and safeguard your wallet. A PIN, On https://bookmarkstime.com/story20004618/bip39-words-https-linktr-ee-bip39-bip39-words-an-overview