alexytony

I've heard that the WIFI protocol is vulnerable to hacking. But WIFI must exist. How can you avoid being invaded by physical means? I've heard that there's a device called a WIFI jammer that stops hackers from hacking, and this site has a description of the usage. http://www.perfectjammer.com/wireless-wifi-bluetooth-jammers.html Does anyone know the feasibility of this approach? I have never come into contact with this convenient situation, I hope someone can explain it.