Bip39 cryptotag https://canvas.instructure.com/eportfolios/3396498/ricardooxtv236/bip39-generator-online-the-very-best-tools-for-secure-pocketbook-development D'CENT Biometric Wallet - A hardware wallet with a biometric authentication element, supporting BIP39 seed phrases and giving an additional layer of safety. This can tell you about empty balances. This really is why it’s essenti... https://www.slideserve.com/lewarthbfp/getting-a-bip39-phrase-in-python-a-comprehensive-tutorial