With the advent of the communication era, the use of mobile phones, PHS, wireless phones and other mobile communication devices has enriched people's daily life and greatly promoted the development of social economy. At the same time, the unrestrained use of mobile communication devices, such as mobile phones, is a headache for some private places and confidentiality units during examinations. The use of mobile jammers can shield mobile phone signals, which has solved the problems caused by using mobile phones.

Nowadays, small communication devices become eavesdropping tools. When someone maliciously uses them to access important lectures and meetings, financial places and secret related organs and units, important documents and private information will be leaked. Similarly, the use of mobile communication devices such as mobile phones to query the answers and pass information on the Internet during the examination has seriously damaged the order of the examination room and affected the fairness of the examination. More seriously, criminals also use mobile phones and other communication devices to commit crimes, causing social panic.

In any case, the use of communication equipment is often inseparable from signals. Mobile jammers are mainly based on this to effectively solve the problems caused by mobile communication equipment such as mobile phones. The mobile jammer uses new technology to interfere with the signals in the protection area, making the mobile phone lose the communication function, and strangling the problems of cheating on the mobile phone and leaking the meeting content to the exam.