Bip39 recovery seeds https://franciscougju442.bravesites.com/entries/general/Produce-Bitcoin-Addresses-from-Seed-Every-Little-Thing-You-Required-to-Know Though it works by using BIP32 system it is possible to continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 There's BIP44 version which some wallet use with the technology of seeds. As an example, should you to ... https://thesocialdelight.com/story6001909/bip39-offline-new-step-by-step-map-for-bip39-github-https-dzen-ru-bip39-phrase-com