The Chilean government is using new technology to combat illegal cell phone use in prisons. Starting from March 19, three prisons in Chile have launched a new system to block phone signals, and plan to extend it to 14 prisons across the country by 2024. cell phone jammer Prison facilities in Santiago, Arica, Copiapo, Valparaiso and other places will be integrated into the system, benefiting the security management of major cities.signal jammer

　　Despite strict visitation regulations, mobile phones are often illegally brought into prisons. For example, more than 300 cellphones were seized during a recent inspection at the San Diego facility.GPS jammer To this end, Chile decided to upgrade prison technology to prevent prisoners from using mobile phones to plan crimes. Thierry de St. Pierre, a digital transformation expert and professor at the University of San Sebastian, pointed out that similar technology has been successfully used in high-security prisons in the United Kingdom and the United States, but previous attempts in Chile have not achieved lasting results, so He believes the current new system is "very necessary".Wifi jammer

　　A report by the Chilean Congress’ Civil Security Committee explains how the system works: it uses equipment to create jamming signals that block data exchange within the prison. drone jammer Signal blocking technology dates back to World War II, when it was used to jam enemy radio communications. The scientific basis of this shielding principle has been reflected in the experiment of British scientist Michael Faraday as early as 1836, which is the famous Faraday cage experiment. By applying electric charge to the metal box, it prevents the formation of electromagnetic wave field in the box. This has also become a modern Design basis for telephone signal blocking equipment.

　　Countries' exploration of mobile phone shielding technology in prisons is not unique to Chile. Countries such as El Salvador have also implemented signal shielding by installing jammers in all prisons. De St. Pierre explained that the signal emitted by these jammers is strong enough to block other signals in a specific area. He vividly compared it to when people try to listen to two radios at the same time, and the sounds of the two interfere with each other, and ultimately neither can be heard clearly.

　　Previous shielding attempts in Chile were ultimately abandoned because they interfered with the communication needs of residents near prisons. The new system is more precise: it can selectively block illegal or high-risk mobile phone signals while avoiding affecting normal communications between guards and surrounding personnel. The implementation of the new system at the San Diego South Detention Center, San Diego One and the Special High Security Prison Facility represents a major advancement in signal blocking technology.

　　The new technology system is equipped with computer monitoring, which can scan the prison area in real time and automatically identify and block illegal equipment. De Saint-Pierre pointed out that the system allows staff to continuously update the blocking range through the blacklist function and control the signal direction within a precise shielding area, effectively reducing the impact on the surrounding environment and ensuring that residents are not disturbed.

　　This advanced signal interception technology is finding widespread use beyond just blocking communications signals. For example, in some experiments in biomedical laboratories, the application of the Faraday cage principle can effectively reduce equipment interference. Therefore, to ensure accurate data collection, metal accessories need to be removed before ultrasound or X-ray inspections to avoid signal interference.