Bip39 Seed. Because of the cryptographic layout of BIP-39, a weak passphrase doesn't reduce the protection of another wallets or support expose the seed words. This might include creating a immediate backup, a cryptic hint that only you would probably fully grasp, sharing parts of the passphrase with trustworthy relatives. https://bookmarkindexing.com/story18671116/bip39-mnemonic-https-linktr-ee-bip39-the-single-best-strategy-to-use-for-bip39-wallets