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Advertising ID
Tracking
Platform-provided identifier intended for advertising measurement and targeting.
Definition
An advertising ID (e.g., mobile ad identifier) is a resettable identifier provided by the OS for advertising attribution and targeting. Many SDKs use it to link events across apps.
In plain English
Platform-provided identifier intended for advertising measurement and targeting.
Why this matters
Why it matters: Persistent identifiers enable cross-app profiling; limiting access reduces tracking surface.
Example
Example: App reads ad ID and sends it with events to multiple ad partners.