On March 19, 2024, three major prisons in Chile will implement a new mobile phone blocking system aimed at combating the use of illegal mobile phones in prisons. signal jammer It is expected that by the end of 2024, the measure will be implemented in a total of 14 prisons across the country. cell phone jammer The implementation of this measure will have a far-reaching impact on the security management of Chilean prisons and become an important means to prevent prisoners from committing crimes through mobile phones.GPS jammer

　　1. Technical principle of the new system

　　The new system uses more precise signal interception technology, which is more targeted than the jammers that fully blocked signals in the past. Its working principle is based on the Faraday cage effect, which can identify and intercept specific signals by setting up multiple antennas in a specific area.Wifi jammer This means that the system can lock and block mobile phone signals that are judged to be illegal without interfering with the normal use of legal communication equipment.

　　Professor Thierry de Saint-Pierre of the School of Engineering, Architecture and Design of the University of Saint Sebastian explained that the accuracy of the system allows it to interfere with illegal signals while avoiding the impact on the gendarmes and surrounding residents. This technology can also automatically scan and identify new illegal signals and include them in the interception range, ensuring that prisoners cannot circumvent the shielding measures by changing their devices.

　　2. Technical challenges and the key to successful implementation

　　In the past, Chile has tried to use frequency jamming technology in prisons, but these attempts have not been successful for a long time due to technical and management problems. These problems are mainly concentrated in two aspects: one is the widespread interference caused by comprehensive signal shielding, which affects the normal communication of the gendarmerie and neighboring residents; the other is that the system is difficult to maintain and update, and cannot cope with different types of communication devices used by prisoners.

　　To solve these problems, the new system has made a number of technical improvements. For example, it introduces a signal monitoring and management function based on a computer system, which enables the gendarmerie to update the blacklist in real time and ensure the effectiveness and flexibility of shielding measures. In addition, the directional design of the antenna makes the signal shielding range more accurate and no longer interferes with the outside of the prison. These technical breakthroughs are the key to the successful implementation of the system.