Bip39 Wallet. Is passphrase similar to PIN? No, a passphrase just isn't the same as a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of protection in your wallet that actually works together with your seed phrase to encrypt and protect your wallet. A PIN, https://webnowmedia.com/story4055143/bip39-wallets-https-linktr-ee-bip39-a-review-of-bip39-word-list-pdf