i think you should get some signal blocker device

Nowadays, public WiFi has become very common. Many homes, schools, and companies have WiFi networks. People can access the Internet more easily, but sometimes we need to cut off WiFi and Bluetooth signals in certain areas. If you can get adjustable functions signal blocker, that would be perfect, here will really achieve your purpose.They use signal jammer devices to shield themselves and the location of the vehicle so that no one can find their location. They often place a portable GPS jammer in the car, which can be carried around, and can be directly turned on when needed, and their position is hidden without affecting the normal use of other electronic devices.

This WiFi blocker can simultaneously adjust GSM 3G 4G mobile phone signal and Bluetooth so that customers can determining the frequency band to be blocked.Take a look at this 5-antenna high-power adjustable desktop mobile phone WiFi signal jammer and learn more about this Bluetooth 4G mobile phone signal jammer depending on the signal strength of a given area.In addition, thanks to the high-quality cooling system, this product can work continuously for one day without worrying about the damage caused by the high temperature of the WiFi Bluetooth jammer during work, and it can always maintain a good working condition. This excellent interference device has been sold at store at a low price and high quality.

The portable door jammer is equipped with a car charger, so you don't have to worry about the location of the device due to lack of power, so it is very important to interfere with the car charger. The Signal Blocker Device in our store are equipped with car chargers, for those who want to be in the car. It is very convenient for people who use signal jammers.GPS tracking technology is now particularly developed. The GPS tracker is small in shape and difficult to find. Sometimes it is difficult for others to know when tracking us. So when you want to block your location at some point, it's convenient and cheap to have a GPS blocker, but remember not to use it illegally.