Bip39 Compatible Non Custodial Wallet. In summary, BIP39 aims to Increase the dependability and protection of the generation and recovery strategy of mnemonic phrases, thus enabling customers to manage and back again up their electronic property extra securely. Passphrase values are saved in the /.tmp.tmp file around the MicroSD card. https://stephendpzmw.wikibyby.com/1108519/the_anatomy_of_a_bip39_phrase_entropy_words_and_stability