Bip39 Mnemonic. Increased protection: By storing your keys offline, hardware wallets secure from online hacks and malware. Along with its specific structure, it should utilize a selected list of words when creating your mnemonic phrase. That is recognized as the BIP39 wordlist. An example of a non-BIP39 seed phrase is: https://exceeddirectory.com/listings635485/bip39-word-list-numbers-https-linktr-ee-bip39-examine-this-report-on-bip39-list