Keystone Bip39. In summary, BIP39 aims to Enhance the trustworthiness and stability on the era and recovery means of mnemonic phrases, thereby enabling end users to handle and back again up their digital property a lot more securely. Passphrase values are saved in the /.tmp.tmp file on the MicroSD card. https://financepublique15814.wikibriefing.com/3006573/the_anatomy_of_a_bip39_phrase_entropy_phrases_and_security