In order to ensure the fairness of each candidate, a few weeks before the college entrance examination, mobile phone jammers will be installed at the test center to prevent students from cheating through high-tech means, and to ensure the fairness of each candidate as much as possible. The mobile phone blocking devices installed in the examination room usually have a strong blocking effect on mobile phone signals. Although this may affect nearby residents, there is actually no way to do so, Exams are the most important.

So why do companies sometimes need blockers? For some companies, trade secrets are important, such as the plans and directions of some companies and core technologies during shareholder meetings. In such meetings, in order to prevent information leakage, mobile phone jammers are usually used to prevent the use of mobile phones for leaks. The last place where shielding devices are often used is in government agencies and prisons. The role of signal shielding devices used by government agencies is similar to that of enterprises, both to protect confidential documents and information, and to prevent the leakage of important information.
In fact, mobile phone jammers are really widely used in current society, and they are needed in many scenarios, including many enterprises and government agencies. So it still depends on the scenario in which the mobile phone jammer is used and where it is suitable to play its corresponding role.