Bip39-Standalone. Is passphrase similar to PIN? No, a passphrase is not really similar to a PIN. A passphrase, while in the context of Bitcoin wallets, is an additional layer of protection in your wallet that actually works along with your seed phrase to encrypt and safeguard your wallet. A PIN, https://bookmarkspring.com/story14284249/bip39-list-https-linktr-ee-bip39-top-guidelines-of-bip39-words