According to this, the director of the larger Suzhou Middle School Office missed Miss Li and answered that the school installed cell phone signal shielding devices for classrooms on weekends, including three at most. “The blocker can only be opened during the test to prevent The phenomenon of individual students" subconsciously, the organization of test norms guarantees its objectivity and fairness. "She said that the school does not encourage students to wear mobile phones in principle, and also stipulates that mobile phones should not be used in classrooms and courses. Wu Tianyi, a lecturer at the School of Education of Soochow University, said that education should promote the realization of educational goals. "Playing with mobile phones in the classroom Playing games can seriously damage educational goals. Installing cell phone signal blockers in classrooms can stop this behavior and get training back on track. I personally strongly support it. "Students do not have the full capacity for civil conduct as he said. Now the school assumes the role of guardian to protect the basic interests of students, so that students can have certain temporary suspension rights.

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As far as radiation issues are concerned, school facilities are annoyingly open bidding, and the purchased products have passed national quality inspections and met safety standards. The scope of influence is limited to the dormitory area and does not affect surrounding residents. Also mentioned the radiation test, the results showed that the radiation is very low and does not affect health. The region has studied the possibility of buying jammers because it is struggling with inappropriate cell phone users. A school board said: I think they have no place in the educational environment. The educational environment should be related to learners, and teachers and teachers cannot teach on mobile phones. When students are busy with mobile phones, they will not learn. This is a distraction... We must minimize distractions.

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Many educators have trouble figuring out how to use electronic devices in the classroom. Some educate students about the negative effects and encourage them to regulate their use. Others even emphasized the possible uses of mobile devices in the classroom. However, many people just try to ban everything. A school principal in British Columbia raised the school’s ban to a new level by setting up cell phone jammers. There is only one problem-the device is illegal in Canada. The director had ordered Chinese equipment online, but some angry students soon discovered it and told him it was illegal. This idea is very important. He looks bad now.

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Some devices can interfere with telephone signals, and in fact pretend to be base stations when they are not. The problem is that it disables emergency calls. Theoretically, you can implement something that puts the phone in "mode" when it is not allowed to talk (because the operator always knows where the phone is). But no one suggested it as a product or standard, although it is not particularly difficult. Maybe it's because of the movie theater owner, the restaurant owner must pay for it.

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Mobile jammers came into being and became more and more complex. Some make the appearance of the mobile phone, and some make the official style. Users can prepare a "quiet room" for themselves within a range of tens of meters to hundreds of meters. The gsm jammer is not a new technology, but in recent years, the demand for jammers in the United States has continued to grow, and thousands of jammers are imported to the United States from overseas every month. According to reports, complaints include cafes, hair salons, movie theaters and hotel owners, public speakers, bus drivers, and even more bus passengers. Many users do not like the aforementioned car users who want to be quiet. From commercial organizations, schools, hospitals to banks, and even police departments, the demand for mobile jammers is increasing, and the demand is also growing due to more and more things to do. It is said that a company in the United States invented a device that interferes with the function of the camera.

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Many detainees continue to organize illegal drug trade within the prison walls. Mobile phones are an important means for prisoners to keep drug organizations functioning normally and under strict control. By contacting visitors, prisoners can arrange the transfer of drugs and drug paraphernalia so that they can continue to maintain the same illegal habits as detainees. Families often suffer from harassment by detained relatives and ask for bail when they realize that relatives are better detained. An important issue is the prisoner’s ability to contact witnesses before an upcoming hearing, trial or appeal. By comparing without justification or correcting the conflict in the testimony, the defendant can reduce or completely withdraw the charges. The most worrying concern that the prison is fighting is that prisoners have used undiscovered mobile phones to warn other prisoners of surprising searches that may confiscate mobile phones, knives, drugs, syringes and other contraband. For correctional personnel and medical personnel working in one of the worst and insidious work environments, this smuggled product can be life-threatening.

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