Cross-platform tracking can use verified identity, email, phone number, payment data, device identifiers, browser signals, advertising identifiers, network data, or behavioral patterns. A shared identity layer makes otherwise separate activities easier to combine.
Linking AI prompts with activity from other platforms can reveal sensitive interests and relationships beyond either source alone. Controls include purpose limitation, identifier separation, consent, anti-tracking restrictions, short retention, independent oversight, and meaningful anonymous or pseudonymous options.
ELI5
Cross-platform tracking connects what someone does in different apps, websites, or devices. The combined record can reveal more about the person than any one service sees alone.
For example, a verified identity shared across services could connect AI questions with shopping, social media, or workplace accounts. Keeping identifiers separate makes that linkage harder.
