With the development of market economy and the progress of science and technology, the mobile phone plays more important role in daily lives, and its functions are more and more. The phone has brought us a lot of convenience, but also caused a lot of trouble at the same time. The report said that students answer the phone, chat QQ and play games In the classroom. Also some students send answers through mobile phone in exam.
Nowadays, with the rapid rise in the number of mobile phone users, it becomes an impossible mission to thoroughly avoid cell phone noise in public places. Thus, a small amount of people in the United States began to use cell phone jammer to resist such interference.
Phone signal interference is not a new technology, but in recent years, the demand of Americans for jammers continued to increase, thousands of jammers imported into the U.S. from overseas every month, the federal government and the mobile phone industry is starting to focus on this problem. According to reports, the boss of coffee shops, hair salons, movie theaters, hotels, public speaker, bus drivers, and even a growing number of bus passengers are in the need of jammers.
James Katz, who is charge of Mobile Communications Research Center of Rutgers University, New Jersey, USA, who said that the feature of the 21st century is that people gradually ceased to consider for the interests of others and restrain themselves. People talking on the phone should think themselves at first, while the people with cell phone jammer think that their rights are more important.