Bip39 offline https://squareblogs.net/edelinepge/using-python-to-produce-a-bip39-mnemonic-a-developers-point-of-view D'CENT Biometric Wallet - A components wallet using a biometric authentication function, supporting BIP39 seed phrases and giving an added layer of protection. For words that only have three letters, there is absolutely no 4th letter. As an example Together with the wor... https://pr8bookmarks.com/story20162670/bip39-seed-phrase-generator-the-greatest-guide-to-bip39-https-dzen-ru-bip39-phrase-com