First of all, from a technical point of view, although the Homemade Portable Cell Phone Blocker system is a new technology product, it should be said that the technology has developed relatively mature, so the security is very high. According to the test report of the authoritative testing agency, the qualified mobile phone signal shielding system has low radiation, and because it is usually installed at a high place, it has no adverse effect on human health. Secondly, from a practical point of view, many domestic authorities have begun to use cell phone jammer . For example, in 2004, in order to maintain the solemn atmosphere of the memorial hall and meet its special confidentiality requirements, the Administration of Chairman Mao Memorial Hall installed a mobile phone signal blocking system in the memorial hall. After actual use and testing, I think this should be a very convincing example. In addition, according to the information collected by the author, the products produced by the mobile phone signal shielding system industry are used in the prisons of the judicial department and the detention centers of the public security department. It is believed that the feedback after use is an immortal evidence.
It was learned from the Beijing Education Examination Institute that in 2014, 98,940 candidates took the exam in Beijing, and the examination institute implemented a safety group examination. For this year's postgraduate examination, 57 test centers and 2,860 test rooms have been set up in Beijing. Before the test, all test centers and admissions units are required to conduct security and confidentiality education and pre-job training for all secret-related personnel, and dispatch discipline inspectors to participate in the security work of test papers throughout the process to ensure a safe and confidential environment for printing test questions. During the test period, the test agency strengthens the inspection work of each test site, arranges the inspection team to check the test site; uniformly rents wireless invisible earphone detectors, Homemade Portable Cell Phone Blocker, wireless signal jammers and other equipment, and distributes it to each test site to provide help for the test site. Use high-tech cheating to prevent and deter key attacks.
