unique-id.googleapis.com: Google Unique ID Tracker Explained | Privacy Auditor

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unique-id.googleapis.com: How Google Tracks Your Device IDs

Google’s tracker, unique-id.googleapis.com, assigns and logs unique identifiers for devices and apps. It builds persistent profiles, eroding anonymity.

What Is unique-id.googleapis.com?

This endpoint handles unique IDs like Firebase Installation IDs and Advertising IDs to recognize specific app instances and devices across sessions.

Data It Collects

Device Identifier: Persistent unique ID for hardware or app instance.
GAID: Resettable ad ID linked to behavior.
FID: App-specific ID for tracking.
IP Address: Reveals location.
User Agent: OS and app details.
Timestamps: Precise logging of requests.

This creates detailed device profiles shared widely.

Who Gets Your Data?

Google ad systems and RTB partners.
App developers using Google services.
Law enforcement via transparency reports.

Sources

Google Privacy Policy.
Android Developers docs.

This is a legal disclaimer. All information is provided for educational purposes only.

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