Bip39 Passphrase Generator. Firstly you should retail store it SEPARATELY from the seed. Obtaining your seed and your passphrase in the exact same locale defeats the objective of possessing a passphrase in the first place. BIP39 specifies a list of 2048 words from which the mnemonic phrase is picked out. https://johsocial.com/story9017050/ian-coleman-bip39-https-linktr-ee-bip39-what-does-ian-coleman-bip39-mean