Electrum bip39 passphrase https://giphy.com/channel/ebliciwsah Although it employs BIP32 strategy you could continue to import BIP39 seeds into Electrum wallet. Also in addition to BIp32 there is BIP44 version which some wallet use with the era of seeds. BIP39 solves this by using human-readable seed phrases composed of organic language words. https://getidealist.com/story22279677/bip39-entropy-bip39-generator-secrets-https-dzen-ru-bip39-phrase-com