Bip39 Mnemonic. Plus, considering the fact that BIP-39 introduced a common common, any High definition wallet will let you restore your accounts. This makes it straightforward to control a number of accounts and switch wallet providers with ease. No, there isn't any specialized limit for the duration of the passphrase. https://social4geek.com/story4213273/bip39-word-list-pdf-https-linktr-ee-bip39-about-ian-coleman-bip39