During the examination, a small phone jammer will be set up to prevent people in the examination room from carrying some mobile phones or electronic devices to cheat, as well as high-tech cameras and transmission equipment. In every examination place, there is such a phone jammer. Once the relevant signal shielding equipment is turned on, although these electronic equipment can continue to be used, they can only be in the condition of no networking, and there is no way to communicate with the outside world. In contrast to large-scale examinations, in order to ensure the authenticity of the examination for everyone, and people do not cheat on the examination. We can only take such a high-tech way to avoid it in an all-round way.

Before entering the examination room, the teacher will strictly check the metal objects on the students' bodies, including mobile phones and other electronic devices. Because examinations determine the lives of most people, if people cheat in examinations, they will be held accountable. If a group engages in cheating, the police will choose to arrest the group, impose certain criminal penalties on them, and cancel the person's performance. Therefore, the reasonable use of phone jammer can promote the good progress of the examination.