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Can GSM jammers effectively deter cheating during examinations?

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Hi, buddy! I've heard that China has used this kind of exam jammer. Once the device is turned on, the nearby cell phone signal, WIFI signal and bluetooth signal will fail. You can refer to the type of jammer used by China education. In addition to using jammers, there is a good way to do it. Let student turn off that cell phone before the examination. I don't think cell phones are a necessity during the exam. I hope your problem can be solved.
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Countries

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