mobile phone jammer used in schools should be legalized because it can contribute to student learning and exam fairness.
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.
Cell phone signal blocker is illegal, but in some cases, such as the examination room, the battlefield, special needs, using mobile phone blocker can be a good solution to the prevailing situation.
Teachers in the school have the right to use Signal Jammer, so we can not use the phone when the class, this is too make people mad.
According to the British National Bureau of Statistics, the world every 10 electronic products, there are eight products from China. GPS jammer is also one of China's major export products.