It is very difficult to find a place where is no Wi-Fi in big cities. There is no such place in residential areas. And if you own a Wi-Fi access point, then no one will ensure that your Wi-Fi password will be not hacked. If there is a signal - you can get an unauthorized access to it. This can be solved by blocking a signal within the premises. Will soon appear on the market specialized wallpaper.
Wallpaper that blocks Wi-Fi have a special pattern, the application of paint with silver. As reported by the developers, its figure does not let to translate a radio signal at range of 2.4 GHz. But at the same time, all other frequencies will not feel any interference, mobile phones, radios, and 3G/4G networks will operate normally. But if you put the wallpaper pattern to another pattern, you can lock and signals at other frequencies.
"At the moment the consumer wireless network has a relatively weak protection and hack is not too difficult. When covering the walls with such wallpaper, inside your Wi-Fi will work "with enthusiasm," but noone will connect from the street". Such screening is recommended to use wallpaper while finishing head offices and other facilities where confidentiality is important.
And if you do not want to be in the room where silver wallpaper with crystal ornaments is on the wall, you can stick on top of it other wallpaper, more nice looking - the effect will not go away. But do not forget that for the complete isolation of radio signal you must not forget about the ceiling, the floor, doors and ... windows.
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