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Some shielded tool does not really shielded signal, and mobile phone jammer to be true, it produces interference by superimposing the signal waveform, thus significantly weakening the signal to disappear.
What mobile phone jammer in the examination room is the real meaning? That is to make cheating candidates signal disappears, so that everyone fair exam.
I want to prevent my next person to use his nasty wireless monitoring devices. Is there any way? Have you ever used the Wifi Jammer, this thing can be bought here.
Cell phone signal blocker, I want to say I really can not stand close, so I did it my way normal use mobile devices. Who is so annoying. Using a cell phone blocker should be stationary. I was a student, I did not test the phone when you let me how to find information.
Knowledge: mobile phone jammer in some countries is within the exclusive tool, most people can not be used, is that legal constraints and security constraints. Only some institutions have the right to use.
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