Bip39. The password could be created down along with the mnemonic phrase, but It will be simpler to keep in mind it, so that a really two-component recovery procedure could be accomplished: for unblocking Bitcoins, you may need “what you've got” additionally “what you know”. I've read via the material https://sites2000.com/story8460983/bip39-word-list-https-linktr-ee-bip39-getting-my-bip39-wallets-to-work