(The BEINI system is a wireless network security testing system based on tinycorelinux. Of course, because it is used for security testing, it naturally has powerful functions in security. Moreover, this system is very simple and easy to learn, so it has gradually replaced BT3, BT4 and other tools, and has gradually become the mainstream system of wireless network security research. Compared with other systems, the biggest advantage of "BEINI" is that it is easy to make a U disk startup disk and has a high success rate.)