Mobility-Based Identity Resolution for CDP Onboarding

CDP and identity-resolution platforms onboarding first-party customer files into advertising and marketing destinations need a way to boost match rates beyond cookie and email-hash graphs, which are eroding due to browser and OS privacy restrictions. This use case stitches anonymized mobile device movement data — lat/long pings with timestamps, dwell time, and home/work location inference derived from repeated overnight and daytime visitation patterns — to first-party customer identifiers (household ID, hashed PII, or CRM record) at census block group or rooftop-level spatial resolution. By joining device-graph identifiers and IP/cookie signals from web and mobility data providers against the CDP's onboarded records, identity platforms can resolve a much larger share of first-party records to activatable device IDs, fill gaps where deterministic matches fail, and generate probabilistic household linkages for cross-device and cross-channel targeting. Daily-refreshed U.S. and Canada mobility panels combined with annually updated census/administrative boundary files (for geographic normalization and CBG-level aggregation) allow the resolved identity graph to stay current as devices rotate IDs, supporting downstream activation into DSPs, walled gardens, and clean-room environments.