Nowadays, mobile phones have many functions, especially in this era of short videos, such as browsing videos, watching TV chats, live streaming, and so on. However, if some people change places and plan to use the convenience of their phones to cheat in exams, this is a very bad behavior, not to mention it, and it is also a strictly prohibited behavior in exams. In order to prevent and eliminate this phenomenon, installing signal interference machines in exam rooms has become a common means. This is a shielding device that can completely eliminate cheating.

When mobile phones constantly send and receive information to the outside world, they need to have communication signals to support them. Without signals, it is impossible to accept and send information, and signal jammers can precisely isolate the communication signals, causing the phone to completely lose contact within the shielding range. This practice has been vigorously promoted in the exam room, providing better protection for the order of the exam room and allowing candidates to achieve a true score. When choosing to purchase signal jammers, be sure to choose the latest version of the shield. If the communication signal in the environment is strong, it is necessary to use higher power shielding products to achieve good shielding effect. Shielding products with different powers are suitable for different environments, and suitable products should be placed in appropriate places. If there is a signal jammer in the exam room, some possibilities should be avoided internally.