In India, there are a lot of people use the cell phone signal jammer for exam tools, they are still students for cheating. Can effectively prevent students from cheating.
Let us look at Cell Phone Jammer is how it works.
I can not admit that sometimes you have to use illegal means to prevent the use of some signals, similar to the invigilator in the examination room, this time we need to use a Cell Phone Blocker
I'm curious how much can the Mobile Jammer shielding in the end range, is not there can be 1 km away, it would be too crazy
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