With this incredible distance in mind, and given the size of the antenna on most GPS-equipped devices, it’s no wonder that the received signal ... While a WiFi or cellular jammer would perhaps ...

Ed Jackson (R-Jackson). Jamming machines block cell phone signals, but the technology is banned in state prisons thanks to ...

In a crackdown on illegal mobile signal jammers, Delhi police seized a Chinese device from Palika Market and arrested a shopkeeper. The operation, led by ACP Anil Samota, follows guidelines ...