Interfering with wireless networks is a trivial matter, as they are designed to be polite and provide an opportunity for all devices to jump on. A handheld wifi jammers uses it to fill the network with noise, so no other device has a chance to enter. This is useful for penetration testing from your own network or suspecting that you have a spy wireless camera near your house. wifi jammer is a simple application that can be used by anyone with basic knowledge of laptop and Linux. These types of applications must be used with care and you must be careful not to interfere with non-selling or risky networks.
For the convenient signal jammer of this program, your wifi card needs to work to inject data packets into the network. You need to learn the wireless card chipset, and often command dmesg in Linux to display this information, or if you are using a wireless USB dongle, run lsusb. With the information obtained, one can then search the Internet for whether the card is suitable for running Aircrack or any other WPA Crack utility. If the wireless chipset can run a WPA cracking tool, it means that it will be able to inject packets in the real-time network and can work with wifi jammers for sale.