Bip39 Vs Slip39. Is passphrase the same as PIN? No, a passphrase isn't similar to a PIN. A passphrase, within the context of Bitcoin wallets, is an extra layer of stability for your wallet that actually works along with your seed phrase to encrypt and defend your wallet. A PIN, https://allkindsofsocial.com/story4348834/bip39-https-linktr-ee-bip39-5-simple-statements-about-bip39-mnemonic-explained