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The Madison Avenue Field GuideA field guide to marketing & advertising, by Brandon Mina

GlossaryPrivacy & IdentityCross-Device Tracking

Privacy & Identity

Cross-Device Tracking

Recognizing the same person across phones, computers and TVs, using logins (deterministic) or statistical signals (probabilistic), for targeting and attribution.

By Brandon MinaCEO, BrandPilot AIUpdated November 2026

Short answer

Cross-device tracking is recognizing the same person across phones, computers, tablets and TVs. It relies on logins and other exact identifiers, known as deterministic matching, or on statistical signals such as IP address and device type, known as probabilistic matching. It supports frequency control, targeting and attribution across a customer's devices.