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       U.S. Customs and Border Protection (CBP) officers in Wisconsin recently seized a slot machine jamming device while inspecting a shipment from Hong Kong.

       CBP officers made the discovery at the Milwaukee Port of Entry on Feb. 4, the agency said in a press release.

       An EMP slot machine jamming device. (CBP)

       The ElectroMagnetic Pulse (EMP) devices, which are prohibited by the Federal Communication Commission, are used to "jam" the inner workings of a slot machine.

       EMP generators create electromagnetic pulses to disrupt electronics from about a meter’s range, according to CBP. The devices send an electric current through a magnetic field – often with a magnetic copper wire.

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       CBP said the shipment was manifested as a car adapter from an electronics supplier in Hong Kong and was heading for a residence in Mosinee – about 175 miles northwest of Milwaukee.

       Port Milwaukee (uwm.edu)

       "There are a variety of nefarious ways these tools can be used," LaFonda D. Sutton-Burke, Director of Field Operations-Chicago said in a statement. "These types of jammers are prohibited by federal law because they can be used to interfere with radio communications, cellular phones, GPS’s, and other communication devices."

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       CBP officers at the Port of Milwaukee Express Consignment Operations facility inspected the shipment and sent it to the Federal Bureau of Investigations Headquarters’ Mechanical Engineering Division for further analysis.