Privacy Policy

Last Updated: October 20, 2025

Welcome to the PGCS Coordinate Sharing Service (hereinafter referred to as 'the Service'). This Privacy Policy is formulated in accordance with the Personal Information Protection Act and explains how the Service collects, processes, and uses your personal information. Please read this policy carefully before using the Service.

1. Collection of Personal Information

The Service collects the following personal information:

  • User Hash ID
  • Coordinate messages you share
  • Room data (room name, room ID)
  • Device information (browser type, operating system)
  • Usage records (connection status, message timestamps)
  • Location information (when you actively choose to share GPS location)

2. Purpose of Personal Information Collection

The Service collects your personal information for the following purposes:

  • Providing real-time coordinate sharing functionality
  • Maintaining normal service operation
  • Improving user experience
  • Ensuring service security
  • Statistical analysis and research

3. Use of Personal Information

The Service will use your personal information within the scope of the aforementioned collection purposes. Without your consent, the Service will not provide your personal information to third parties or use it for other purposes.

The coordinate messages you share will be displayed to other users in the same room and can be copied by other users.

4. Protection of Personal Information

The Service takes the following measures to protect your personal information:

  • Using HTTPS encrypted transmission
  • Using WebSocket Secure (WSS) connections
  • Implementing access control mechanisms
  • Regular data backups
  • Restricting employee access permissions

5. Local Storage (LocalStorage)

The Service stores the following data in your browser:

  • User identification data
  • Record of copied coordinates
  • Preference settings (notification settings, duplicate checker settings)
  • Tutorial display records

This data is only stored on your device, and you can clear browser data at any time to delete these records.

6. Cookies and Tracking Technologies

The Service uses Cookies and similar technologies to maintain your login status, provide personalized services, and display relevant advertisements.

6.1 Cookies We Use

  • Essential Cookies: Maintain login status and basic functionality
  • Functional Cookies: Remember your preference settings
  • Advertising Cookies: Used by Google and its advertising partners to display personalized ads

6.2 Google DoubleClick Cookie

The Service uses Google AdSense to display advertisements. Google uses DoubleClick Cookies to show you relevant ads based on your visits to this website and other websites. These Cookies include:

  • Browser type and version
  • Visit time and duration
  • Pages viewed
  • Approximate geographic location (city level)
  • Your interest categories on other websites

6.3 Managing Cookie Settings

You can manage or reject Cookies through the following methods:

  • Reject or delete Cookies through browser settings (but this may affect the use of some features)
  • Visit Google Ads Settings to manage personalized ads
  • Visit NAI Opt-Out Page to opt out of third-party ad tracking

7. Notification Feature

The Service provides browser push notification functionality. When you enable notifications, the Service will send you push notifications when new messages are received. You can turn off notification functionality at any time in your browser settings or Service settings. The Service does not store or share your notification permission settings.

8. Your Rights

In accordance with the Personal Information Protection Act, you have the following rights regarding your personal information:

  • Query or request access
  • Request copies
  • Request correction or supplementation
  • Request to cease collection, processing, or use
  • Request deletion

To exercise the above rights, please contact us through the contact information at the bottom of this page.

9. Data Retention Period

Your personal information will be retained until the Service is terminated or you request deletion. When you leave a room, your messages will still be retained in that room unless you actively delete them.

10. Third-Party Advertising Services (Google Ads)

10.1 Google AdSense Service

This website uses Google AdSense advertising service to support website operations. Google and its advertising partners use Cookies and other technologies to collect information in order to:

  • Show you relevant ads based on your past visits to this website or other websites
  • Evaluate ad effectiveness and provide aggregate reports on ad placement
  • Prevent fraudulent activities and ensure ad system security

10.2 Third-Party Advertising Partners

In addition to Google, we may also partner with the following types of third-party advertising networks:

  • Google AdSense and its advertising technology partners
  • Programmatic advertising platforms
  • Ad Exchanges

These third parties may set and read Cookies on your device or use Web Beacons to collect information. This Privacy Policy does not cover how these third parties use data. We recommend reviewing the privacy policies of each advertising service provider.

10.3 Personalized Advertising and Opt-Out Mechanisms

You can manage personalized advertising settings or opt out through the following methods:

⚠️ Note: Opting out of personalized advertising does not mean you will no longer see ads, but rather that the ads you see will no longer be personalized based on your interests.

10.4 Google Privacy Policy

For information on how Google uses advertising data, please refer to Google Advertising Technologies Policy and Google Privacy Policy.

11. Privacy Policy Modifications

The Service reserves the right to modify this Privacy Policy at any time. The modified policy will be published on this page and the 'Last Updated' date will be updated. Continued use of the Service indicates your acceptance of the modified Privacy Policy.

12. Contact Us

If you have any questions about this Privacy Policy or personal data processing, or wish to exercise your rights, please contact us through the following methods:

Service Name: PGCS Coordinate Sharing Service
Email: pgcs51129@gmail.com
Service Hours: Monday to Friday 09:00-18:00

This Privacy Policy is formulated in accordance with the Personal Information Protection Act of the Republic of China and related privacy protection regulations to protect your personal information.