BEIJING, July 22  -- China's Ministry of Industry and Information Technology launched a campaign on Tuesday to clamp down on pornography circulated on smart phone applications.

The ministry will step up supervision over telecommunication service providers, application creators and online app stores.

It will set up a system that can verify the identity of app creators as well as monitor and dispose of pornographic information.

The ministry will also encourage the reporting of porn-related applications, create a blacklist of such apps and ban them from accessing the Internet.

Smart phones have overtaken computers as the most popular way to access the Internet in China. However, fast growing mobile Internet has become a new channel to circulate pornographic information.