Knowledge: the signal is actually encrypted transmission of electromagnetic waves, the signal peaks and troughs on behalf of 1,0. cell phone jammer play a superposition of waves, resulting in the shielding effect.
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.
Exam in the use of cell phone signal jammer is a very normal thing, it is not bound by law to use such a shielding signal.
What makes these voyeurism so rampant everywhere wireless camera, my privacy, my God.
I know there is this Wifi Jammer sell.
How to make a cell phone jammer? In China to buy a small module, so you have a test board, and can be assembled according to their needs a 4g jammer.
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