Jammers on trains
On public transportation, cell phone calls from passengers sitting next to you are often annoying. In order to keep quiet, some "friends of peace" choose to buy illegal jammers to block other people's cell phone signals. However, this behavior is illegal. Despite this, these devices are still quietly popular in some countries.
Principal's cheating strategy
At a high school in Salzburg, Austria, principal Gerhard Klampfer found that students were using smartphones to cheat during exams. He tried to confiscate students' phones, but found that students brought two phones, handed in a spare phone and kept the smartphone. In desperation, he decided to take more extreme measures - using a cell phone jammer.
The use and consequences of signal jammerrs
Klampfer installed a jammer in the school toilet, covering a radius of 15 meters, to prevent students from using their phones during exams. However, the telecommunications staff soon discovered the interference signal and went to the school to confiscate the device. Although the use of jammers is illegal, Krampfer was only warned and avoided a fine of up to 4,000 euros.
Legal status of jammers
Private use of mobile phone jammers is strictly prohibited in Germany and most of the European Union. Officially, only law enforcement agencies have the right to use these devices. However, in France, mobile phone jammers can be used legally in cinemas, theaters and public events to ensure a quiet environment.
Market demand for jammers
Despite legal prohibitions, the market demand for jammers is still increasing in some countries. Some people use these devices illegally in pursuit of quietness. On German online forums, some users shared their experience of using them, saying that jammers effectively blocked mobile phone calls on public transportation and brought them peace. Other users use jammers to control their children's Internet use at home and even test the effectiveness of the devices on trains.
Conclusion
Although jammers can bring a short period of silence, they violate legal regulations and pose safety risks. Educators, parents and passengers should seek legal means to solve the problems caused by mobile phone use and ensure a balance between personal privacy and public order. In the pursuit of quietness, abiding by the law and respecting the communication rights of others are the most important principles.