Today, various cell phone jammer electronic devices emerge in endlessly. Some of them can even evade detection after camouflage. Cheating candidates enter the test room to output test questions to the outside world, and then people outside the test room help answer the questions to achieve the purpose of cheating, and the basis of all this is that it must be through the Internet! In this case, signal shielding is particularly important. How does signal shielding work? To put it simply, take a mobile phone as an example. Mobile phones need to communicate with other devices outside the examination room through signal towers, while wireless communication needs to be carried by electromagnetic waves. Depending on the properties of electromagnetic waves, both devices need to be within a certain frequency range. Send and receive, so Cell Phone Blocker In Church is the frequency that affects your electronic device, making the two frequencies different to achieve a shielding effect.
Today, more and more students carry smartphones. In order to better prevent students from playing mobile phones at school, especially at night after sleeping and turning off the lights, from damaging their learning knowledge, some academies have been installed in junior high schools Cell Phone Blocker In Church recently. The move raised questions from some students. I heard that cell phone jammers are harmful to the human body. "In the next few days, there were several more posts about cell phone jammers in colleges and universities, which caused a lot of discussion among netizens. Electric wires, I see high-voltage lines at night, and I see high-voltage lines every day...", there are nearly 30 messages on the message board message. The school got acquainted with 4 boys, 3 of them are using smart and one is using a mobile phone. A boy told reporters that about half of the students in the class have mobile phones, mainly for making calls. I also use my mobile phone to watch dramas, read messages, read books on my mobile phone, chat and make friends, etc. He complained to journalists: "