WiFi master key is a free online tool based on the sharing economy model. Through cloud computing technology, idle WiFi data shared by hotspot owners will be used to help more people surf the Internet. No matter where the user is, as long as you open the WiFi master key, you can see what hot spots around you can share, and click the link to surf the Internet. At the same time, the WiFi master key can also provide WiFi power-saving function, check the traffic consumption of mobile phones, quickly convert mobile phones into WiFi hotspots, test the current network speed in real time, and help users manage and use network resources.

Lianshang Network, the operating company of WiFi Master Key, and Tsinghua Institute of Trusted Networks and Systems established a WiFi security laboratory, and launched a research project-WiFi hotspot security detection technology to upgrade the original "secure cloud sensing system" of WiFi Master Key. After the application of new technology, hot spots in security detection become the data source of threat intelligence of WiFi master key. By measuring the suspiciousness of hot spots, products give priority to showing hot spots with high security, give early warning to hot spots with risks, and eliminate risks before users connect with hot spots. In the process of networking, the WiFi master key provides the underlying driver to protect the networking in real time.