Bip39. You would then do a essential Restoration by using a command such as the just one below. (This command takes advantage of a sample wallet file bunlded with BTCRecover) Any individual else who discovers the phrase can steal the bitcoins. It has to be held mystery, as an example https://socialbuzzfeed.com/story4514835/bip39-mnemonic-https-linktr-ee-bip39-helping-the-others-realize-the-advantages-of-bip39