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Advertising ID

Tracking

Opt‑out Telemetry App Analytics Behavioral Advertising

A device ID used for ads and tracking.

Definition

An advertising ID is a code on your phone used to track you for advertising across apps.

In plain English A device ID used for ads and tracking.

Why this matters

Why it matters: It can link your activity between different apps unless you limit it.

Example

Example: An ad network uses the advertising ID to show you targeted ads.