WAPI certificate manager WAPI = WLAN Authentication and Privacy Infrastructure. A Chinese national standard for Wireless LAN within a limited area such as a home. Not very useful if you don't live in China. https://en.wikipedia.org/wiki/WLAN_Authentication_and_Privacy_Infrastructure Digital certificates identify devices and apps for security. Just like your driver’s license shows that you can legally drive, a digital certificate identifies your device and confirms that it should be able to access something. https://security.stackexchange.com/questions/102550/what-are-wifi-certificates-used-for-what-are-they
Phones target this application