Passphrases are a little bit of a tricky concept. By default, some copyright wallets disable the use of the optional passphrase. Even though it can insert some protection, What's more, it provides complexity. If you set a passphrase, your backup strategy has just gotten much more difficult: you now have https://webcastlist.com/story20343527/a-secret-weapon-for-bip39-words-to-numbers