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The article doesn't specify, they could be just looking at patterns of "usual" vs "unusual" ad ids showing up. However, re-identification of "anonymous" ad ids
by jhayward 8y ago
The article doesn't specify, they could be just looking at patterns of "usual" vs "unusual" ad ids showing up.
However, re-identification of "anonymous" ad ids is extremely common, and they could easily be using a service that gives them, for instance, a home address and email account associated with the phone via re-identification methods.