Privacy Policy

1. Introduction

JANKEN ("the Service") is a free web application for playing rock-paper-scissors online. This Privacy Policy explains what information is collected when you use the Service and how it is handled.

2. Information We Collect

The following information is collected automatically:

• IP Address — Recorded in server access logs
• Nickname — Optional. Used only during a game session and auto-deleted after 30 minutes
• Game Data — Hands played, scores, etc. Auto-deleted after 30 minutes
• User-Agent, Accept-Language — Recorded in server access logs

3. How We Use Information

• To provide and operate the Service
• To improve the Service and fix issues
• To prevent abuse

4. Data Retention

Game-related data (nicknames, game data) is automatically deleted within 30 minutes after a session ends. Server access logs are retained for the period necessary for service operations.

5. Third-Party Sharing

We do not sell or share collected information with third parties, except when required by law. The Service uses trusted third-party cloud infrastructure for its operations.

6. Cookies

This Service does not use cookies. Nicknames are stored in your browser's temporary storage and are automatically cleared when you close the browser tab.

7. Contact

For questions about this Privacy Policy, please use the contact feature within the Service.