Mobile jammers block most connected devices

This thing itself looks like a mobile phone, maybe it is no longer completely modern, it is a black box with a small antenna on it. These days, when students at Odenthal High School near Bergisch Gladbach write their Abitur exams, the box is on the teacher's desk. It is not a stone mobile phone produced by an old educator, but a device used to locate a mobile phone. The high school in North Rhine-Westphalia is one of the few German schools that uses this cell phone jammer device-publicly acknowledging the device.

Last year, a high school graduate copied most of the answers from the Internet, and the fraud case annoyed elementary school students. No teacher noticed anything. The headmistress Angelika Schmoll-Engels said that the name was not betrayed. However, students and parents hope to prevent fraud in the future. Although the mobile phones must be handed in before the exam, teachers still noticed many discarded old mobile phones without SIM cards. Students keep their newer, networkable devices secret.

Therefore, the school purchased a frequency meter on the Internet for 150 euros to detect activated mobile phones nearby. However, the device cannot measure the exact location. For reasons of data protection law, this is prohibited. Even with a frequency meter, the situation is not without controversy. In Schleswig-Holstein, the competent authority banned its use in February. They were placed in classrooms and a high school toilet.

Pressing the button paralyzed the entire school. A spokesperson for the Keele Ministry of Education said that the law must first pass a legal check to see if it was allowed. The Düsseldorf state government is more relaxed. If the sender cannot collect personal data, there is no problem. As early as 2007, the Waldorf School in Stuttgart had developed and installed the "Paul" mobile phone detector.

It is impossible to determine how many schools in the country use direction finders or even cell phone jammers. A British cell phone blocker manufacturer praised on the "Lehrerfreund" Internet portal that it has noticed an increase in demand in Germany. Although they are banned in German schools, they are still very popular.

The school will not only buy mobile transmitters, but also the entire fixed station, build them on the false ceiling, and paralyze all mobile communications in the school through the remote control. So far, in Germany, only prisons have officially used this technology. And the school does not want to compare with this system.