In prisons and detention centers, it is common practice to install cell phone blocking systems. If you ask the purpose of installing a cell phone signal blocking system in a prison, most people will probably say: Of course, it is to block the cell phone signals of prisoners in prison and prevent them from contacting the outside world. In fact, this is only an answer to the problem of appearance, and does not stop the in-depth analysis of the nature of the problem.
What was this prison for? Sure, it's for the purpose of keeping criminals in custody, but can criminals communicate with the outside world while in prison? Actually, it can, but there are a lot of restrictions on this kind of external contact. For example, only designated relatives and friends can be contacted, and landlines installed by the prison must be used. Talk time is also limited. So what is the purpose of installing cell phone blocking systems in prisons?
As an important supervision place for imprisoning criminals, criminals are not allowed to carry, hold and use mobile communication terminals such as mobile phones. In a prison with a sound management system and complete inspection and audit measures, under normal circumstances, mobile phones are not allowed to be brought into the prison, let alone handed over to prisoners. If criminals don't normally have cell phones in their hands, why do prisons have cell phone blocking systems?
This depends on all prison management systems being fully implemented and enforced. As the old saying goes, individual prison guards or prison staff will find ways to bring mobile phones into the prison for personal purposes. If these staff are not disciplined enough to keep their mobile phones so badly that they communicate directly with prisoners and give them directly to people who have done good work to use, then things will go wrong. For such illegal acts, because there are too many dark scenes in the whole process, it is impossible to immediately find and stop, as a prison administrator, we can only install a mobile phone shielding system to directly stop shielding all mobile phone signals in the prison. In this way, even if some mobile phones are brought into the prison, the existence of the mobile phone signal shielding system will cause the mobile phone to have no signal and cannot stop communicating with the outside world normally.
As can be seen from the above analysis, the appearance is that the prison installed mobile phone signal shielding system is for criminals to use mobile phones, but the real purpose behind it is to prevent local undisciplined personnel from secretly carrying mobile phones into the prison, which leads to more serious violations of prison restrictions on the use of mobile phones.
