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Cross‑Device Tracking

Tracking

Tracking Fingerprinting Advertising ID

Linking your phone, laptop, and tablet together.

Definition

Cross‑device tracking tries to connect your activity across different devices using logins, ad IDs, shared networks, or fingerprints.

In plain English Linking your phone, laptop, and tablet together.

Why this matters

Why it matters: It expands profiling beyond one device and makes opting out harder.

Example

Example: You browse on your laptop, then see “related” ads on your phone.