Privacy Policy

1. Controller and scope

The controller is ZERO EDUCATION&ARTS Co., Ltd., represented by Kenji Naito, Representative Director (privacy contact: contact and disclosure request form). This policy applies to information handled through ZERO-1 EXPO FUKUOKA, its profiles, ZERO LINK, QR sharing, notifications and support features.

2. Information we handle

• Account identifier, name, email address and profile image received from Google when you use Google sign-in.
• Email address and verification code when you register or sign in by email.
• Profile data you enter: date of birth, username, display name, title, biography, avatar, links, tags and roles.
• Your ZERO LINK diagnosis answers and the resulting recommendations.
• Settings, language and notification preferences, timetable interactions, support messages, and security information such as session identifiers, timestamps and error records.

Date of birth is not shown on public profiles. We do not request advertising identifiers or collect sensitive information unless clearly explained and lawfully permitted.

3. Purposes

• Authenticate users, maintain sessions and prevent abuse.
• Provide email-code registration and sign-in.
• Create and display profiles, QR pages, roles, links and event participation information chosen by the user.
• Use diagnosis answers to generate ZERO LINK recommendations and show the result.
• Send in-service notifications and show timetable, venue and calendar features.
• Respond to support requests, investigate reports and resolve disputes.
• Maintain, secure, troubleshoot and improve the service.
• Measure usage with optional analytics only after consent; we do not use analytics for advertising or cross-site behavioural targeting.
• Meet legal obligations and exercise or defend legal claims.

4. Access and listing in ZERO LINK

The ZERO LINK student directory is available only to logged-in users. A student is included in the directory only when they choose to be listed. Permission to display a face photo is confirmed separately from the student’s choice to be listed. Other profile items are displayed according to the user’s settings.

5. Providers and sharing

We use service providers under contracts or equivalent controls for the purposes above: Google (authentication and profile information), Resend (verification email delivery), OpenAI (AI processing of ZERO LINK diagnosis answers), Turso/libSQL (database), Cloudflare R2 (avatar storage), Vercel (hosting and delivery), map/calendar providers, and an analytics provider only when enabled with consent. Diagnosis answers are sent to OpenAI through its API to generate the result. We do not sell personal information or share it for advertising. We may disclose information when required by law, to protect users or the service, or during a business transfer with appropriate safeguards.

6. International processing

Some service providers may process information outside Japan. The Operator takes legally required measures when entrusting information to providers and manages access and handling under its contracts and applicable law.

7. Retention and deletion

All information collected by the Service will be deleted by October 31, 2026. Only aggregated numerical statistics that do not identify individuals will be retained. You can also request account deletion through settings or our contact form.

8. Security

We use access controls, least-privilege administration, encrypted connections, provider security controls, monitoring and incident response appropriate to the risk. No internet service can guarantee absolute security. If a legally reportable incident occurs, we will investigate, notify affected people and authorities where required, and take steps to prevent recurrence.

9. Cookies and similar storage

Essential cookies maintain login, security and language settings. Optional analytics storage is used only after your choice. Advertising cookies are not used. The available choices and storage periods are described in our Cookie Policy; you can change your choice from the cookie settings control.

10. Your rights and requests

Subject to legal exceptions, you may request notice of purpose, access, correction, addition, deletion, suspension of use, suspension of third-party provision, or disclosure of records as provided by the Act on the Protection of Personal Information. Submit requests through our contact and disclosure request form with the account identifier, request details and reasonable identity verification. We will respond without undue delay; a lawful fee may apply only if disclosed in advance.

11. Children and changes

Users under 18 should discuss use of the Service with a parent or legal guardian. We will post revisions with a new effective date. Material changes will be announced through the Service or another appropriate method.

12. Contact

Terms of Service · Cookie Policy