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Thermal Imaging Devices

In a famous Supreme Court case (Kyllo v. U.S.), police officers suspected that the defendant was growing marijuana in his house and they used a thermal imaging device to check for heat in the house. The officers did not have a warrant. The Supreme Court of the United States held that when the Government uses a device that is not in general public use, to explore details of a private home that would previously have been unknowable without physical intrusion, the surveillance is a Fourth Amendment "search," and is presumptively unreasonable without a warrant.

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This article is licensed under the GNU Documentation License. It uses material from the Wikipedia article "Search & seizure".