Bip39 Wallet. The wallet handles the weighty lifting of changing the mnemonic words via a strategy of elaborate hashing, salting, and checksum operations into a binary "seed," that's then utilized to deliver the all-essential private and public encryption keys. Anyone else who discovers the phrase can steal the bitcoins, so https://phrasedirectory.com/listings13063175/bip39-compatible-wallet-https-linktr-ee-bip39-what-does-bip39-mnemonic-code-converter-tool-mean