United States v. Knotts, 460 U.S. 276 (1983)
United States v. Knotts, 460 U.S. 276 (1983) Facts of the Case: The defendants argued that the use of this device was a Fourth Amendment violation. The device in question was described as a beeper that could only be tracked from a short distance. During a single trip, officers followed a car containing the beeper, relying on beeper signal to determine the car's final destination. The Court unanimously held that since the use of such a device did not violate a legitimate expectation of privacy there was no search and seizure and thus the use was allowed without a warrant. It reasoned that a person traveling in public has no expectation of privacy in one's movements. Since there was no search and seizure there was not a Fourth Amendment violation. Reason for Approaching the Court of Law: Minnesota law enforcement agents suspected that one of the defendants was purchasing chloroform for the manufacture of methamphetamine, an illegal drug, and arranged with the manufacturer to have...