"Authentication by email", "biometric authentication, passcode authentication, etc.” and “authentication by app” can be used for identity verification.
"Authentication by email" and “Authentication by app” use one-time password sent via an authentication app or email to confirm your identity. "Authentication by email" is particularly recommended as it is relatively easy to set up.
Biometric and passcode authentication uses the authentication used to unlock the screen of your smartphone or computer (biometric, passcode, pattern, PIN, etc.) to confirm your identity.