Prisons and detention centers, as special regulatory facilities that restrict personal freedom, installing mobile phone signal jammers is a necessary technical means to ensure regulatory security, maintain judicial justice, and prevent illegal and criminal activities. The core reasons can be elaborated from the following four dimensions:
First, eliminate "collusion outside prison" and prevent serious security incidents
This is the most crucial demand. If detainees possess mobile phones, they may engage in the following high-risk behaviors through communication:
1. Planning prison breaks/assaulting police officers: Communicating information such as prison layout, police force deployment, and surveillance locations with external accomplices, formulating prison break plans, or inciting detainees to cause collective trouble or attack supervisors;
2. Retaliating against witnesses/victims: Contacting accomplices through mobile phones, threatening, intimidating or even retaliating against witnesses, victims and their families in cases, and disrupting judicial procedures;
3. Organizing illegal activities: Remotely directing criminal gangs outside the prison to continue engaging in drug trafficking, fraud, smuggling and other criminal activities, or using mobile phones to transfer ill-gotten gains and destroy evidence, becoming the "command center inside the prison".
Signal jammers can directly block the communication links between mobile phones and base stations (including 2G/3G/4G/5G and Wi-Fi/Bluetooth), technically cutting off the illegal contact between detainees and the outside world and eliminating the above-mentioned safety hazards.
Second, maintain regulatory order and prevent internal violations and violence
1. Eliminate "privilege within prison" and bullying: Some detainees may bribe supervisors, seize resources, or use their mobile phones to capture scenes inside the prison or threaten other detainees, thereby triggering internal conflicts.
2. Prevent information leakage: Detainees may use their mobile phones to take pictures of prison supervision processes, surveillance equipment, and the privacy of other detainees, and spread them through social media platforms, damaging the image of the regulatory authorities and even being exploited by lawbreakers.
3. Avoid disrupting normal management: Mobile phone calls and ringtones can disrupt the quiet management environment of the prison, affect the daily routine, and inmates may receive inappropriate information (such as violent and extreme ideas) through their mobile phones, which may trigger violations.
Third, ensure judicial justice and prevent collusion in giving false testimony and tampering with evidence
1. Blocking channels of collusion: Multiple detainees involved in cases (such as those involved in gang crimes or joint crimes) may exchange case details and unify statements through mobile phones, and even communicate illegally with external witnesses and lawyers, tampering with testimony and forging evidence, which hinders the investigation, prosecution and trial of the case and affects judicial fairness.
2. Prevent interference in case handling: Detainees may obtain the progress of case investigation, details of judicial procedures, or even bribe relevant personnel through their mobile phones, interfering with case handling and leading to wrongful convictions or improper sentencing.
The jammer ensures that detainees cannot interfere with the judicial process by cutting off illegal communications, guaranteeing that cases are handled in accordance with the law.
Fourth, comply with laws, regulations and regulatory standards, and solidify safety responsibilities
1. Legal and policy requirements: According to the "National Prison Law", "Regulations on Detention Centers", and other relevant provisions, detention facilities must take necessary measures to prevent detainees from escaping, committing violence, or disrupting the supervision order. Signal jammers are compliant technical prevention and control measures.
2. Industry regulatory standards: The Ministry of Justice and the Ministry of Public Security have clear requirements for security precautions in prisons and detention centers. "Preventing detainees from holding or using communication devices" is the core assessment indicator, and installing jammers is a necessary measure to implement security responsibilities.
3. The irreplaceability of technical prevention and control: It is difficult to completely eliminate mobile phones (such as mini phones, phones hidden in the body or objects) merely through manual search, metal detection and other means. The jammer can achieve "full coverage of the area and all-weather blocking", making up for the loopholes of manual prevention and control.
4. Supplement: Usage Guidelines for Jammers (to avoid excessive external influence)
The jammers used in prisons/detention centers must comply with the "Regulations on Radio Management" and adopt a design of "directional shielding + power control" :
*Only block the signals within the supervision area to avoid interfering with the residents and public communication facilities around the prison.
*It does not block the work communication of supervisory personnel (such as dedicated walkie-talkies and internal fixed-line telephones) to ensure normal law enforcement dispatch.
*Regular inspection and maintenance are carried out to ensure effective shielding of the latest 5G, Wi-Fi 6 and other signals, and to avoid risks brought about by technological upgrades.
Fifth, Summary
The installation of mobile phone signal jammers in prisons and detention centers is essentially to "block illegal communication channels" through technical means, prevent security risks from the source, maintain regulatory order, and ensure judicial fairness. It is a key link in the combination of "technological prevention and human prevention" in the modern regulatory system, and is directly related to the personal safety of regulatory personnel and detainees. As well as social public security and judicial credibility.
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