A.
"Biometric Authentication, Passcode Authentication, etc." is an authentication methods that uses the authentication method used to unlock the screen of your smartphone or computer (biometric, passcode, pattern, or PIN, etc.) to confirm your identity.
For detailed registration instructions, please refer to section "2.2-A Using Biometric Authentication and Passcode" and "2.3 How to set up compatible browsers" of the Expo ID Registration Manual below.
ExpoID Registration Manual: