In Kyllo v.United States,the U.S.Supreme Court addressed the question of whether the police may use infrared thermal-image scanners to scan homes without a warrant in order to find artificial heat sources,such as heat being released from grow lights for hidden marijuana crops.How did the Court rule?

Question

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The Court ruled that the use of infrared thermal-image scanners to scan homes without a warrant is a violation of the Fourth Amendment's protection against unreasonable searches and seizures. The Court stated that such use of technology was a search, and therefore subject to the same constitutional protections as other searches. Without a warrant or probable cause, the use of thermal-imaging technology to "search" a home violates the privacy rights of the homeowner.

In Kyllo V