From the perspective of cultural traditions, many Westerners believe that speaking out loudly or in public is “bad behavior.” But in New York, whether in cars, shops, or on the street, there are people with mobile phones everywhere. In movie theaters, theaters, churches, meeting rooms, and even at funerals, cell phone ringtones can be annoying, and users of the external selves even put their phones on vibration files, which can cause damage to certain facilities.
Andrew, an architect from San Francisco, got on the train and sat next to a woman in her 20s. Since the woman was holding a mobile phone in the chat room during the journey, Andrew chose to be a "mobile phone guard"-he put his hand in the mobile phone pocket on the mobile phone, and there was a cigarette box-sized cigarette case in the pocket. As a result, the strong radio signal from the jammer was enough to cut off all cell phone signals within a 9-meter radius.
Andrew said: "After I pressed the button, she lasted for about 30 seconds, and then found that the signal was cut off." Andrew said that when he first noticed that he could cut off other people's cell phone signals, he was the first One response is "freedom".
With the rapid increase of mobile phone users, it is almost impossible to avoid interference from other mobile phones of the public. As a result, the United States began to have a small but rapidly developing "Public Order Defender" and began to use a direct method, namely a cellular signal jammer, to resist interference.
"Nowadays, mobile phone addiction is very common. Some children have poor self-control. The installation of signal blockers can prevent children from playing with mobile phones in class. At the same time, it also prevents students from ordering takeaway programs on TV. Telephones and parents are more comparable. Comfortable.
Where there is demand, there is supply. cell phone jammer came into being and became more and more complex. Some make the appearance of a mobile phone, and some make it official. Users can create a "quiet space" for themselves within a range of tens of meters to hundreds of meters. GSM jammers are not a new technology, but in recent years, the demand for jammers in the United States has continued to grow, with thousands of jammers imported from overseas to the United States every month. According to reports, people who complain about purchases include cafes, hair salons, movie theaters and hotel owners, speakers, bus drivers, and even more bus passengers.
Many users don't like the people above, they want to be quiet in the car. From commercial organizations, schools, hospitals to banks, and even law enforcement agencies, there is a demand for mobile jammers, and as there are more and more things to do, the demand is also growing. It is said that an American company invented a device that interferes with the function of the camera.