Bip39 Mnemonic. Is passphrase the same as PIN? No, a passphrase is not really the same as a PIN. A passphrase, during the context of Bitcoin wallets, is an extra layer of stability to your wallet that actually works along with your seed phrase to encrypt and safeguard your wallet. https://webnowmedia.com/story4245328/bip39-list-https-linktr-ee-bip39-bip39-generator-an-overview