How to use jammers safely?

The use of wifi signal jammer may lead to interesting applications for companies or other institutions in terms of security. There are different sizes of WiFi signal jammers capable of scanning different numbers of frequencies or variable ranges.
Prevent third parties from connecting to the WiFi signal, for example via mobile devices.
Prevent information leakage or theft by wirelessly transmitting data to the outside world.
Keep a small number of functional communication channels and avoid creating twins that could lead to the creation of malicious communication networks.