According to reports, the Chinese police have begun to install signal jammer devices around the prison to prevent another crime. really?
Jammer-MartMarch 2020
In fact, China does use signal jammer on a large scale in its prisons and is working on it. Using such devices can not only effectively isolate criminals from the outside world, but also prevent the smuggling of mobile phones, which effectively prevents all criminal activities using mobile phones as channels.
In fact, China does use signal jammer on a large scale in its prisons and is working on it. Using such devices can not only effectively isolate criminals from the outside world, but also prevent the smuggling of mobile phones, which effectively prevents all criminal activities using mobile phones as channels.