The U.S. Supreme Court's decision in Chatrie v. United States extends Fourth Amendment protection to geofence location data ...

The Supreme Court's 6-3 geofence warrant decision elevates location data to constitutional protection, creating urgent compliance gaps for businesses of all sizes.

Kagan insists that the Fourth Amendment cannot be defeated by slicing invasions of privacy into pieces small enough to appear ...

Under what has come to be known as the Katz test, a defendant seeking to invoke Fourth Amendment protections against a warrantless government search must prove that he or she had a subjective ...

On April 27th, the Supreme Court will hear oral argument in Chatrie v. United States, on the Fourth Amendment implications of geofencing. I have already posted the amicus brief I wrote for the Court ...

A recent New York court case upheld a murder conviction despite claims that DNA evidence used violated the defendant’s Fourth Amendment rights. The case highlights ongoing legal questions about ...

Police in Virginia located a suspect by demanding location-specific cell phone data from Google. Did that violate his constitutional rights? It’s been a few years since the Supreme Court heard a major ...

I recently posted about the open fields doctrine of Fourth Amendment law, the rule that it is not a "search" under the Fourth Amendment for the government to trespass on to your open field. In my post ...