1. Opening introduction
In an important professional qualification examination, as soon as the examination bell rang, the candidates began to write furiously with great tension. However, no one could have imagined that beneath the calm examination room there were hidden secrets unknown to others. As the exam progressed, the surveillance personnel outside the examination room detected an abnormal situation. Multiple mobile phone signals were frequently sending and receiving messages at the same time, and the signal sources pointed to the inside of the examination room.
It turns out that some examinees, in order to pass the exam, are willing to take desperate risks and collude with the outside world, attempting to cheat through mobile phones. They stored a large amount of exam-related materials in their mobile phones in advance, or kept in touch with cheating gangs to receive answers in real time. Since no signal jammers were used in the examination room, these cheating behaviors were rampant for a time.
After the exam, the relevant department intervened in the investigation and found that this cheating incident involved a large number of people, seriously undermining the fairness and seriousness of the exam. After learning about this, many candidates who had been preparing for the exam seriously felt extremely angry and disappointed. Their efforts seemed worthless under the improper means of these cheaters. This incident has drawn widespread attention from society. People have condemned the cheating behavior one after another and begun to reflect on the importance of examination room safety and fairness at the same time. So, how can such cheating phenomena be effectively prevented from happening? The answer is to use signal jammers in the examination room.
2. Signal jammers have become the Nemesis of cheating.
The working principle of a signal jammer is to emit interference signals of specific frequencies to prevent mobile phones from receiving or sending information normally, thereby cutting off the transmission path of cheating information. When the jammer is turned on, it will emit interference signals with the same frequency as the mobile phone's communication signals into the surrounding space. These interference signals will superimpose with the signals that the mobile phone was originally supposed to receive or send, causing the mobile phone to be unable to accurately parse out effective information. Under normal circumstances, mobile phones achieve functions such as making calls, sending text messages and accessing the Internet through signal interaction with base stations. The interference signals emitted by the jammer can make the mobile phone mistakenly believe that it has received a large number of disordered signals, thus failing to establish a stable connection with the base station, and eventually presenting a state of no signal or extremely poor signal.
In many examinations, the use of signal jammers has successfully prevented cheating from happening. Outside a certain college entrance examination venue, the police arrested a gang that attempted to use high-tech equipment to assist examinees in cheating. They planned to send the answers to the examinees in the examination room via wireless devices. However, as signal jammers were activated in the examination room, these cheating devices simply couldn't work properly, and eventually the cheating plan failed. In a vocational skills appraisal examination, Dazhan Electronics also found a similar situation. After the examinees entered the examination room, the signal jammers were immediately activated. The candidates who originally intended to receive the answers via mobile phones found that there was no signal at all on the phones. They had no choice but to give up the idea of cheating and complete the exam relying on their true ability. These cases fully demonstrate that signal jammers play an irreplaceable role in maintaining the fairness and impartiality of examinations and have become the "Nemesis" of cheating.
3. Create a focused environment for candidates
In examination rooms without signal jammers, the interference caused by mobile phones is not uncommon. During the exam, a sudden ringtone of a mobile phone can instantly disrupt the tranquility of the examination room and interrupt the candidates' train of thought. During an important final exam, just as the examinees were answering the questions nervously, a series of mobile phone ringtones suddenly rang in the examination room. This sudden sound startled many examinees and disrupted their originally concentrated thoughts. Some examinees unconsciously look around, trying to find out the source of the bell, which leads to their inability to concentrate on the test paper.
The message prompt tone can also distract the candidates' attention. Even if the examinee does not deliberately check their mobile phone, when the brain receives the prompt sound, it will subconsciously react, thereby affecting the concentration of the answer. However, some examinees' mobile phones keep receiving message prompts. Although they try hard to restrain themselves from looking at their phones, these prompt sounds still unconsciously interfere with their thinking, causing them to make some mistakes they shouldn't have when answering the questions.
The existence of signal jammers can create a quiet and focused examination atmosphere for examinees. When the jammer is activated and the mobile phone loses signal, external interference is completely isolated. Candidates can focus on the exam without distractions, think and answer questions more attentively, thereby enhancing their concentration and accuracy in answering questions. In the examination rooms where signal jammers were activated, candidates generally reported that they could answer questions more concentrating and felt that the atmosphere of the entire examination room had become purer, which was conducive to bringing out their true abilities.
4. Ensure the stability of the examination order
If mobile phone signals are not blocked, they may interfere with the examination equipment in the examination room, thereby affecting the smooth progress of the examination. In some exams, the playback devices for listening tests have malfunctioned due to interference from mobile phone signals. In the CET-4 and CET-6 exams of a certain school, problems such as stuttering and noise suddenly occurred during the listening playback section, preventing the examinees from listening to the listening content normally. After inspection, it was found that there was strong mobile phone signal interference near the examination room, which affected the normal operation of the listening playback equipment. This unexpected situation not only disrupted the answering rhythm of the examinees, but also brought great troubles to the organization and management of the examination.
In some important examinations, the normal operation of examination equipment is related to the success or failure of the examination. Signal jammers can effectively prevent the interference of mobile phone signals to these devices, ensuring that the examination proceeds in an orderly manner as planned, and play a crucial role in maintaining the order of the examination room. In large-scale examinations such as the college entrance examination, civil service examination and postgraduate entrance examination, the monitoring equipment, signal transmission equipment and other facilities in the examination rooms all require a stable operating environment. The use of signal jammers can provide these devices with an interferency-free space, ensuring the smooth recording of the examination process and the stable transmission of signals, and avoiding the loss of examination data or abnormal situations caused by signal interference.
5. Summary
Signal jammers play an irreplaceable role in examination rooms. They are a solid defense line for maintaining the fairness and impartiality of examinations, a capable assistant for creating a favorable examination environment for candidates, and a key device to ensure the smooth progress of examinations.
In the face of the continuous emergence of cheating methods, we must rely on effective tools such as signal jammers to resolutely crack down on cheating behaviors and safeguard the fairness of examinations. Ningbo Dazhan Electronic Technology Co., Ltd. has also been making continuous efforts to create a fair stage for every candidate to compete and showcase their abilities, making examinations truly an effective way to select talents and promote social progress.
