Supreme Court Rules on Geofence Warrants, Citing Fourth Amendment

Why it matters locally: The Supreme Court's ruling on geofence warrants will directly impact how California law enforcement agencies, including the Los Angeles Police Department and the Santa Clarita Valley Sheriff's Station, can utilize location data in their investigations.

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The U.S. Supreme Court has placed limitations on law enforcement's use of geofence warrants. Justice Elena Kagan, writing for the 6-3 majority, stated that this technique violates the Fourth Amendment's prohibition against unreasonable searches. Geofence warrants enable authorities to request location data from technology companies for all devices within a specific geographical area during a defined time frame. Investigators have used this data to identify individuals present at crime scenes or specific locations of interest. The Fourth Amendment protects individuals from unreasonable searches and seizures. The Court's ruling establishes that comprehensive collection of location data through geofencing falls under this constitutional protection. This decision sets new boundaries for how law enforcement agencies can utilize advanced digital surveillance methods in their investigations.