Any Ox21 user can register Ox21 DEX account, using his Ox21 wallet address.
DEX generates mnemonic phrases for new users, that they have to write down and have to re-enter to make sure that they remember these phrases.
And then, they have to create password for login, and the best associate with fingerprint or faceID for login.
Password minimum length is 6 digits with letters and numbers, higher case and lower case.
If the user forgot his password, the only way to recover his account is going through mnemonic phrases.