Wireless communication exists. I can access the Internet from anywhere. When I use cell phone jammer, they almost always try to solve problems that are completely different from what I think they're solving. Smartphones and wireless devices are spreading rapidly. We seem to admit that the communication interference devices are used to gsm jammer with people around us. The scope for rejection can be small. The WiFi bluetooth jammer also blocks radio waves in the 1800mhz (1.8ghz) band.
