Triangulation

Triangulation is the practice of combining data from multiple independent sources to identify and profile a person — even when no single source has enough information on its own.i

Think of it like this: knowing someone drives a red car tells you very little. But knowing they drive a red car, live on Oak Street, and work at the hospital narrows it down to one person. That’s triangulation — and it works the same way with digital data.

No single company sees everything. But through data brokers, cookie syncing, advertising exchanges, and cross-device tracking, they combine partial pictures into a complete identity — more accurate than what any single source could build alone