The battle between signal jammers and the wisdom of prisoners Although the latest mobile phone signal jammers have been installed in Puzhal Prison, the prisoners do not seem to have stopped communicating. cell phone jammer This phenomenon exposes the shortcomings of jammer technology and reveals the complexity of prison management. signal jammerAs prisoners' methods are upgraded, the use of mobile phones inside the prison is becoming more and more difficult to control, which is undoubtedly a big test for managers.GPS jammer

　　Signal shielding "failed": prison mobile phones are rampant The latest surprise inspection showed that although jammers have been put into use, prisoners still frequently use mobile phones to keep in touch with the outside world. In just two months, management found a total of 9 mobile phones and several accessories in different prison areas. Wifi jammerThis discovery once again shows that the current jammers have not completely achieved the shielding effect. Since the beginning of this year, the number of mobile phone violations in prisons has surged, far exceeding the level of the same period last year. Jammers seem to have become "paper tigers" and it is difficult to completely block signals.

　　Prisoners' "superb" tricks: secret means to avoid interference According to prison guards, prisoners have come up with endless tricks to hide their mobile phones. For example, they hide their phones in the gaps of clothing, or hide them by disassembling them into parts to avoid inspection. What's more, prisoners will take advantage of the signal dead corners of the prison building to find places that are not covered by jammers so that they can make calls smoothly. This "technical" breakthrough makes prison managers exhausted.