Companies build AI-powered identity graphs that stitch together your phone, laptop, tablet, and smart TV into a unified profile by matching IP addresses, cookies, fingerprints, and behavioral patterns across devices. This creates a complete map of your digital life across all your screens, enabling personalized tracking and targeting that you can't escape by switching devices.
Cross-device tracking is the practice of linking your behavior across smartphones, laptops, tablets, and smart TVs into a single unified identity graph that advertisers and data brokers maintain about you. These graphs connect your actions across platforms even when you use different browsers, accounts, or IP addresses.
AI-powered identity resolution engines make this tracking dramatically more accurate by inferring probabilistic matches between devices based on behavioral patterns, timing, and location signals — and AI privacy tools can now audit which companies have built these graphs about you and help you disrupt the data signals that feed them.
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