There are several key reasons for using cell phone jammers in exam rooms, all related to maintaining the fairness, security and order of the exam.

Preventing cheating: The main purpose of using mobile phone signal jammers in examination rooms is to prevent candidates from cheating using their mobile phones. Cheating on mobile phones may include looking up answers, transmitting information, using stored information, etc. These behaviors can seriously undermine the fairness and accuracy of the exam. By blocking mobile phone signals, candidates can be prevented from communicating with the outside world and reduce the possibility of cheating.

Protecting exam content security: In some important exams, exam content may be kept confidential in advance. By blocking mobile phone signals, candidates can be prevented from using their mobile phones to shoot, record or transmit exam content, thereby protecting the security and confidentiality of the exam. This ensures the fairness of the exam and ensures that all candidates can take the exam under the same conditions to avoid unfair competition.

Maintain order in the examination room: Mobile phones may cause noise and interference in the examination room, affecting the focus and concentration of other candidates. Using a cell phone signal blocker can effectively eliminate or reduce cell phone ringtones, vibrations and call sounds, creating a quiet and focused exam environment. This helps improve the candidate's focus and concentration, ensuring the exam goes smoothly.

Prevent external interference: There may be a large number of wireless signal sources or interference equipment around some examination venues, and these signal sources may cause interference to examination equipment or communications. By using a signal blocker, the impact of external interference on the exam can be reduced and the stability and accuracy of the exam process can be ensured.

To sum up, the use of mobile phone signal jammers can effectively maintain the fairness, security and order of the exam, and provide candidates with an exam environment conducive to concentration and fair participation. This ensures the accuracy and reliability of test results and maintains the credibility of educational assessments.