When backing up your mnemonic phrase, we strongly advise utilizing physical media, such as creating on the mnemonic phrase card or simply a metallic board such as the SafePal Cypher. It's also possible to preserve several again-ups of it. This text clarifies BIP39, the standard that defines how seed phrases http://edgargvkh682.theburnward.com/from-mnemonics-to-security-understanding-bip39-passphrases-and-their-importance-in-copyright