Bip39 mnemonic checksum https://www.symbaloo.com/mix/bookmarks-xfkm Though it works by using BIP32 system you could nonetheless import BIP39 seeds into Electrum wallet. Also besides BIp32 You can find BIP44 Edition which some wallet use with the technology of seeds. BitBox02 - A successor towards the BitBox collection, this components wallet supports BIP39 https://writeablog.net/ipennywpzc/the-ultimate-overview-to-offline-bip39-generators-remain-secure