With the development of modern technology, mobile phones have become a tool for criminals to continue their crimes in prison, especially in the Rosario region of Argentina. In order to curb criminal activities inside the prison, the Santa Fe provincial government introduced a new cell phone signal jamming system at Pinheiro Prison. signal jammerHowever, although this measure has achieved initial results, its effectiveness and limitations have also triggered extensive discussions.


　　1. The operating mechanism of mobile phone signal interference system


　　Pinheiro Prison's new cell phone signal jamming system consists of eight jamming devices that emit jamming signals into the prison through antennas, making it impossible for mobile phones to connect to external networks, effectively blocking prisoners from communicating with the outside world. cell phone jammer The system is designed to prevent prisoners from directing outside criminal activity, particularly violent crime and extortion, through their mobile phones.GPS jammer


　　A distinctive feature of the system is its precise jamming capability.Wifi jammer Through the use of directional antennas, interference signals are effectively restricted inside the prison to avoid unnecessary interference with the daily lives of residents around the prison. The system was developed by Invap, Argentina's state-owned technology company, based on Israel's advanced technology platform and can adapt to 4G communication systems. At the same time, with the popularization of 5G technology, it is planned to add new antennas to cope with the continuous updates of communication technology.


　　2. Initial results of the interference system


　　The communications environment at Pinheiro Prison has improved significantly since the jamming system was put into use. Prisoners can no longer easily use mobile phones to communicate illegally, a change that could help reduce links between prisons and outside criminal networks. In the short time since the system was put into use, there has been a reported decrease in violent crimes both inside and outside prisons, with a significant drop in the frequency of shootings and extortion campaigns directed from within prisons.


　　Taking the Rosario area as an example, statistics from the prosecutor's office show that about 80% of shooting incidents in the Rosario area were directed through mobile phones in prisons. By introducing a mobile phone signal jamming system, the criminal chain of command in the prison has been effectively cut off, thereby curbing violent criminal activities in the area to a certain extent.


　　3. Limitations and challenges of interference systems


　　Although the interference system is initially effective, its limitations cannot be ignored. First, criminals continue to find new ways to bypass interference, such as using more advanced communication equipment or obtaining illegal means of communication through other channels. This means that the effectiveness of jamming systems may diminish as criminal tactics escalate.



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