Sun Trace Privacy Policy

Effective Date: September 1, 2025

1. Overview

Sun Trace is a Chrome browser extension that displays sun trajectory on maps. We value your privacy, and this policy explains how we collect, use, and protect your information.

2. Information We Collect

        2.1 Location Data
        What we collect: Latitude and longitude coordinates from your map clicks
Purpose: Calculate sun trajectory and sunrise/sunset times
Storage: Only stored locally in your browser, never uploaded to servers

        
        2.2 Time Information
        What we collect: Date and time you select
Purpose: Calculate sun position for specific times
Storage: Only stored locally in your browser

        
        2.3 Technical Information
        What we collect: Detection of map service type (Amap, Baidu, Google)
Purpose: Ensure extension works properly on map websites
Storage: Only stored locally in your browser

    

3. Information We DON'T Collect

❌ Personal identification information (name, email, phone)
❌ User account information
❌ Network requests or browsing history
❌ Third-party website content or data
❌ Any sensitive personal information

4. How We Use Your Data

Local Processing: All sun trajectory calculations are performed locally in your browser
No Server Transmission: We do not send your data to any servers
No Third-Party Sharing: We do not share your information with third parties
Functional Purpose: Data is only used to provide sun trajectory visualization

5. Data Storage

Storage Location: All data is stored only locally in your browser
Retention Period: Data persists until you clear browser data or uninstall the extension
Data Security: We cannot access your locally stored data

6. Permissions Explanation

Permissions requested by this extension and their purposes:

content_scripts: Only runs on map websites (Amap, Baidu, Google)
web_accessible_resources: Provides map detection scripts
No Network Permissions: Extension does not make any network requests

7. Your Rights

Data Control: You can clear browser data anytime to delete all information
Uninstall Extension: Uninstalling removes all related data
No Tracking: We do not track your usage behavior

8. Policy Updates

We may update this privacy policy from time to time. Significant changes will be notified through extension updates.

9. Contact Us

If you have any questions about this privacy policy, please contact us:

Email: [email protected]

This privacy policy was last updated: September 1, 2025