A personal authentication method is required to use the service, and in the case of a joint certificate, it can be used after importing it from a PC through the authentication center. ○ Preparation procedures before use - For members using a joint certificate, please go to [Authentication Center] - [Import Certificate] in the Smart Witax app and then move the certificate to your smartphone according to the instructions. - If you are not a Witax member, please register using the “Sign up” menu a