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With the popularity of smart phones, students often use their mobile phones frequently in class on campus, which not only affects the learning atmosphere, but also may cause the risk of information leakage. By deploying cell phone jammer ( https://www.jammermfg.com/cell-phone-jammers.html ) in key places such as classrooms and libraries, learning efficiency can be improved, interference from irrelevant information can be reduced, and students can be more focused on their studies.

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