We all know that in some special scenarios, it is necessary to shield cell phone signals to prevent leaks or cheating. For example, some secret-related meetings are not allowed to carry mobile phones, and if they arrive, Cell Phone Wifi Jammer Price will be blocked in the venue. cell phone jammer The college entrance examination is almost one of the most important things in Chinese people’s lives. Ensuring its fairness has become an important task of the local education bureaus. In order to ensure fairness, the college entrance examination venues will adopt various anti-cheating measures, such as metal detectors and examiners. Check, fingerprint unlocking, etc., and the most common one is signal shielding.
Nowadays, various electronic devices emerge in endlessly, some can even evade detection by disguising. Cheating candidates enter the exam room to output the questions to the outside world, and then people outside the exam room help answer the questions in order to achieve the purpose of cheating, and the basis of all this That is-it must be spread through the Internet! In this case, Cell Phone Wifi Jammer Price is particularly important. How does signal shielding work? To put it simply, take a mobile phone as an example. The mobile phone needs to communicate with other devices outside the examination room through a signal tower, while wireless communication needs electromagnetic waves to carry. According to the characteristics of electromagnetic waves, both devices need to be within a certain frequency range. Sending and receiving, so the mobile phone jammer is the frequency that affects your electronic equipment, so that the frequencies of the two parties are different, so as to achieve the effect of shielding.
