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Police use jammers for law enforcement
A jammer is a mobile communication device that transmits in the same frequency range as a cell phone, creating strong tower jamming and blocking cell phone signals and call transmissions. Jammers are used in gas stations, schools, various examination rooms, cinemas, and advanced shielding products serve many customers such as examination rooms, gendarmerie, and secret meeting rooms. Jammer...
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Al-Quds University