Chatrie v. United States · ¶26

On June 14, the police officers thus applied to a Virginia magistrate for a geofence warrant directed to Google. The application described the cell-phone location data Google collects, and explained how that data could lead to identifying the robber, his possible accomplices, or additional witnesses to the crime. Success was particularly likely here, the application stated, because the robber appeared to be using his phone when he entered the credit union, and may even have been speaking with an accomplice. The officers’ proposed geofence was a circle with a radius of 150 meters surrounding the credit union.

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