What is a wifi jammer?

A WiFi jammer is a device designed to intentionally disrupt or block WiFi signals within a specific range. It operates by emitting radio frequency interference that disrupts the normal communication between WiFi-enabled devices, such as smartphones, laptops, and smart home appliances, and the WiFi router or access point. This interference effectively creates a "jamming" effect, preventing these devices from connecting to the internet or accessing the WiFi network. WiFi jammers are sometimes used in security-sensitive environments to prevent unauthorized access to networks.