Which case held that GPS tracking constitutes a search because it involves a physical trespass onto the defendant's vehicle?

Which case held that GPS tracking constitutes a search because it involves a physical trespass onto the defendant's vehicle?

• A. United States v. Jones
• B. Katz v. U.S.
• C. Weeks v. United States
• D. Mapp v. Ohio

Answer: (A)

The key idea is that a physical intrusion onto property can trigger Fourth Amendment protections. United States v. Jones holds that attaching a GPS tracking device to a suspect’s vehicle and tracking its movements constitutes a search because it involves a physical trespass onto the vehicle. The Court focused on the trespassful act of placing the device as the triggering event that brings the surveillance within Fourth Amendment safeguards, requiring a warrant supported by probable cause. Contextually, this case anchors the tradition that illegal searches aren’t just about the data obtained but about the government’s intrusion into private property. By contrast, Katz v. U.S. centers on a person’s reasonable expectation of privacy rather than a trespass, Weeks v. United States establishes the exclusionary rule for illegally obtained evidence, and Mapp v. Ohio extends that rule to the states. None of those address GPS trespass in the same way, so the GPS-trespass scenario is best explained by United States v. Jones.

The key idea is that a physical intrusion onto property can trigger Fourth Amendment protections. United States v. Jones holds that attaching a GPS tracking device to a suspect’s vehicle and tracking its movements constitutes a search because it involves a physical trespass onto the vehicle. The Court focused on the trespassful act of placing the device as the triggering event that brings the surveillance within Fourth Amendment safeguards, requiring a warrant supported by probable cause.

Contextually, this case anchors the tradition that illegal searches aren’t just about the data obtained but about the government’s intrusion into private property. By contrast, Katz v. U.S. centers on a person’s reasonable expectation of privacy rather than a trespass, Weeks v. United States establishes the exclusionary rule for illegally obtained evidence, and Mapp v. Ohio extends that rule to the states. None of those address GPS trespass in the same way, so the GPS-trespass scenario is best explained by United States v. Jones.