Please make sure that you are using one of the following browsers: Safari, Google Chrome, or Microsoft Edge,and that screen lock authentication etc. is enabled on your device.
For detailed information on how to register, please refer to section "2. Types and Characteristics of Identity Verification Methods" of the Expo ID Registration Manual below.

Expo ID Registration Manual:

https://www.expo2025.or.jp/wp/wp-content/themes/expo2025orjp_2022/assets/pdf/tickets-index/id_registration_manual_en.pdf