Cell phone signal jammers to prevent leaks

Today, in order to ensure the information security of important places and important posts, all military and civilian units have installed 4G mobile cell phone jammer in some sensitive areas in accordance with relevant management regulations and requirements. When this kind of equipment is working, the function of sending and receiving signals of mobile phones within a certain range can be disabled, and the dialing-in and data transmission cannot be performed, so as to achieve the purpose of compulsory disabling. With the upgrading of mobile communication from 3G to 4G, 3G mobile phone signal jammers are gradually replaced by 4G, because most of the 3G mobile phone signal jammers currently on the market are “in name only” for 4G mobile phones, and they have no effect on normal use. any shielding effect.

In fact, from a technical point of view, a smartphone is equivalent to a “bug”. A mobile phone in working state will quietly send the surrounding audio and video information to the receiver; even if the mobile phone is turned off, as long as the battery is not removed, the surrounding The environmental information can still be obtained by proprietary eavesdropping equipment; in addition, 4G mobile phones can quickly transmit data, high-quality audio, video and images, etc., the rate is much higher than that of 3G transmission, so if you are not careful, a large amount of information may be used for ulterior motives of people steal in an instant in stealth.

Therefore, with the advent of the 4G era, mobile phone signal jammers must be upgraded accordingly. For specific methods, the mobile phone signal jammers used can be strictly tested in time, and the shielding effects of mobile phones of various standards can be tested on the spot. At the same time, it is suggested that the model, scope, time, location and personnel of mobile phones should be strictly regulated as required, and the network should be cleaned regularly to prevent leakage.