Ad Tech Privacy Watch

Supreme Court Rejects Third-Party Doctrine for Location Data – Landmark Ruling for Ad Tech Geofencing

Supreme Court Rejects Third-Party Doctrine for Location Data – Landmark Ruling for Ad Tech Geofencing

Key Questions

What did the Supreme Court rule in the Chatrie case?

SCOTUS held that obtaining Google Location History constitutes a Fourth Amendment search, rejecting the third-party doctrine for precise location data. This is considered a landmark privacy ruling.

How does the ruling affect ad tech companies?

Ad tech firms must update procedures for responding to data requests involving location data used in geofencing and audience targeting. They should reassess collection and sharing practices for location history.

What is the practical impact on geofencing in advertising?

The decision directly limits law enforcement and third-party access to location data without warrants, requiring ad tech to strengthen protections around geofencing technologies and data handling.

In Chatrie, SCOTUS held that obtaining Google Location History is a Fourth Amendment search, rejecting the third-party doctrine for precise location data. Directly impacts ad tech firms handling location data for geofencing and audience targeting. Ad tech must update data request response procedures and reassess location data collection practices.

Sources (2)
Updated Jul 3, 2026
What did the Supreme Court rule in the Chatrie case? - Ad Tech Privacy Watch | NBot | nbot.ai