Do cell phone signal jammers affect people’s health?

Many people often wonder whether mobile phone signal jammers have any impact on human health. In this article, our editor will provide a detailed analysis to address this question. Let’s explore it together.

In various locations across the country, signal jammers with the ability to interfere and block mobile phone signals are being installed and utilized. These devices are employed to prevent cheating during exams by disrupting mobile phone usage (including China Mobile, China Unicom, CDMA, and PHS). Some local examination centers implemented these devices last year, and several years ago, many special venues such as auditoriums began using them to prevent interruptions caused by incessant ringing of mobile phones. Certain schools even install them in teaching areas to maintain classroom order by preventing students from being distracted by incoming calls. Although the Ministry of Education has not made it mandatory to install cell phone jammers, they acknowledge their effectiveness in preventing large-scale cheating and have issued safety requirements for their use in schools.

Every year during the college entrance examination, discussions arise about whether mobile phone jammers pose health risks to candidates and interfere with their thinking abilities. It is claimed that cell phone jammers can disrupt normal thinking processes. Consequently, reports about the harmful effects of these devices on the human body have surfaced in the media. Some journalists even claimed to experience symptoms such as dizziness, stuttering, difficulty concentrating, chest tightness, nausea, and vomiting after being in close proximity to a mobile phone signal jammer for 15 minutes. Concerned parents of candidates who aspire for their children to excel in exams are anxious about such news and eagerly await clarification from authoritative sources.

Currently, there are two primary methods for signal blocking. The first method involves physical absorption, where metal meshes and plates are installed outside buildings to absorb the electromagnetic waves of mobile phone signals, thereby preventing reception inside. This method is expensive, cumbersome to install, and is generally reserved for specialized scientific laboratories. The second method relies on emitting electromagnetic waves to interfere with mobile phone signals, achieving the desired blocking effect. Media reports indicate that it is this type of device, emitting electromagnetic waves, that is installed in examination rooms for high school and college entrance exams nationwide. The best-selling wifi jammers and GPS jammers in recent years.

The question of whether these devices are harmful cannot be answered definitively. The level of harm and whether it exists depends on factors such as the distance between the device and the human body, transmission power, and other variables.

Similar to mobile phones, these devices emit electromagnetic radiation. The potential harm of electromagnetic radiation to the human body has been a topic of debate worldwide, with no authoritative research or data providing a conclusive explanation. Electromagnetic radiation, primarily acting through thermal effects, stimulates the central nervous system. However, the extent of harm and whether it can cause cancer remains unproven due to a lack of research in this area.

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