Bip39 Passphrase. Is passphrase similar to PIN? No, a passphrase will not be similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of protection on your wallet that actually works along with your seed phrase to encrypt and safeguard your wallet. A PIN, https://reallivesocial.com/story5219497/bip39-https-linktr-ee-bip39-the-fact-about-bip-39-that-no-one-is-suggesting