The difficulty of prison management is also impacted by high-tech products. As for the ban on mobile phones, I have been checking it and I have not been clear. The current smart phones do cause problems for prison management. This time, a prison in Guangdong Province installed an illegal cell phone signal jammer detection system, making the problem easier.The location of the illegal mobile phone detection system is very accurate, and the accurate detection of mobile phone signals can play a very…