Think of it more like browser fingerprinting & bits of entropy instead of a one-shot classification. E.g. cross-reference with other data to get near-100% accu

Think of it more like browser fingerprinting & bits of entropy instead of a one-shot classification. E.g. cross-reference with other data to get near-100% accuracy:" digital fingerprints being emitted from your phone, tracking movement, checking out with a credit card, license plates entering the parking lot, home address vs store location, etc.