Bip39 Wallet. Is passphrase similar to PIN? No, a passphrase is not really the same as a PIN. A passphrase, while in the context of Bitcoin wallets, is an extra layer of safety on your wallet that actually works along with your seed phrase to encrypt and safeguard your wallet. https://webnowmedia.com/story4871234/bip39-wallet-https-linktr-ee-bip39-an-unbiased-view-of-bip-39