Block Ads Cell Phone Chrome

Before officially entering the examination room, the invigilator will usually Block Ads Cell Phone Chrome conduct a close-up inspection of the personal belongings of the candidates in the waiting room. The device alarms by electromagnetic induction of metal objects, and can detect weapons, explosives or small metal objects carried in packages, luggage, letters, fabrics, etc. carried by people. In daily life, when we enter and exit subway stations and stations, the detection equipment in the hands of security personnel is such metal detectors. After the personal inspection is over, the invigilator will generally use the ID card identification technology to accurately identify the personal information of the candidates, so as to prevent the behavior of taking the test on behalf of others. At present, the ID card identification technology includes two methods, namely, the identification of the unified card reader and the identification by the OCR technology. In addition, there are fingerprint recognition, face recognition and so on. After the candidates' personal information is checked, the invigilator will place a cell phone jammer in the classroom to prevent wireless communication in the examination room from communicating with the outside world. The instrument scans from the low-end frequency of the forward channel at a certain speed during operation. The scanning speed of the device can cause garbled interference in the received message signal of the mobile phone, preventing the mobile phone from establishing a connection with the base station.

During the formal examination, in addition to arranging two invigilators to conduct human eye monitoring in the examination room, a surveillance camera will be installed in the front and rear of the examination room to monitor the movement of the examination room in all directions. The advantage of video surveillance is not only that it can realize all-round real-time monitoring, but also the video of the examination room can be archived. After the examination, if the problem is found, the relevant surveillance video can be selected for viewing. Of course, in addition to the strict monitoring in the test room, Block Ads Cell Phone Chrome will be equipped outside the test room, which can receive wireless signals in the monitoring area in real time. The above-mentioned various advanced scientific instruments "show their magical powers" during the college entrance examination period, escorting the dreams of thousands of students in the college entrance examination. Therefore, candidates only need to show their true strength and answer calmly, and avoid taking chances and copying other people's answers. Taking advantage of the tense atmosphere of the college entrance examination, the editor also wishes all candidates to receive a satisfactory university admission letter this summer.