Nowadays, cell phone addiction is widespread. Some children have poor self-control. Installing a bluetooth signal can prevent children from playing with cell phones in the classroom. At the same time, it prevents students from ordering take-away shows on television. Cell phones are more like parents. comfortable. "The classroom has cell phone jammer. Another student named Wang questioned the installation of the sign. Even though the children took their cell phones to school, they still knew we trusted him very much. Wang said," Though he got a contact information from the teacher, but he still hopes to get in touch with the kids directly.
U.S. military experts said that with closed exercises, the U.S. military will have the strongest GPS signals near the battlefield, meaning a large number of domestic civil flights are in serious condition. Sacrifice. The US military believes the country may be able to use GPS jammer technology GPS in skirmishes with competitors, so it will be ready to fight in the worst of conditions without the help of GPS and show us its true strength. The rejection of GPS has become a major problem for US military planners. Partner countries, particularly Russia, use GPS deception and jamming strategies to conduct various training activities close to their borders. We have already discussed this situation in detail, and I encourage you to read this article to understand the importance of losing reliable GPS data to the United States and its allies in negotiating such a great road during the war.
Certain devices can interfere with telephone signals and pretend to be undisturbed base stations. The problem is that it disables emergency calls. In theory, you can implement some functionality by placing the phone in a place where calls are not allowed (since the operator always knows where the phone is), which will put the phone in "mode". But no one recommends it as a product or a standard, although it is not particularly difficult. It may be because the owner of the cinema or restaurant has to pay.