Bip39 Seed. Due to the cryptographic layout of BIP-39, a weak passphrase won't lessen the security of the other wallets or help expose the seed words. Working with passphrases increases security and flexibility. Passphrases are a strong substitute on the duress PIN due to approximately endless quantity of feasible wallets. https://extrabookmarking.com/story19394162/bip-39-https-linktr-ee-bip39-top-guidelines-of-bip39-words