Just came across to a great article at the IHT on China's interest of tightening control of cellphones :
"The new measures being contemplated for tightening control of cellphone use reportedly include mandatory user registration. Users now can easily buy cellphone cards at any convenience store, instantly obtaining a new phone number without identifying themselves. Whether through speech or short messaging, cellphones have played a major role in a wave of social unrest that has swept China in the last two years, allowing people to organize quickly and to spread news of police actions and other developments. Anonymous use of cellphones is a major loophole at a time when the state is investing heavily on monitoring communications of all kinds, and the authorities appear determined to close it"
Whereas there's been quite some media coverage on China's Internet censorship efforts, the country's under-developed income distribution model results in more people having access to plain simple cellphone communications compared to owning a PC. And even if they own a PC, or use public ones to access the Internet, information from China's provinces where the real China is, often breaks out through SMS messages -- or comes in. Venus Info Tech's Cybervision SMS Filtering System is what they've been using, and it seems it's the government's long-term partner. The article also points out on the illegality of reporting or broadcasting information on "sudden events", consider the SARS virus as one of these. Yet another in-depth article, indicates the only usefulness out of this censorship, or let's use a more friendly term, such as content monitoring/filtering, which is the detection of banking frauds and other scams -- can you censor "Bware, SMS unda ctrl" or learn to encode in such a way?
From a business perspective, the Chinese Internet population represents a hot opportunity for companies offering censorship-circumvention services -- IP cloaking and competitive intelligence among the other needs. It's interesting to note U.S government's interest in Chinese citizens having access to more information :
"Ultrareach and Dynamic Internet Technology (DIT) in North Carolina, both connected to Falun Gong, receive U.S. government funding through the International Broadcasting Bureau to help it get Voice of America and Radio Free Asia to Chinese Web surfers. Each day, DIT sends out millions of emails and text messages containing proxy links to Chinese citizens. About one million users have downloaded DIT's circumvention software, which automatically links to the firm's proxy servers, while ``hundreds of thousands'' directly access the proxy Web sites daily, said founder Bill Xia. UltraReach, claims 100,000 users use its proxies.All told, the IBB spends about $5 million a year on contracts with hacktivists and firms on censorship-busting efforts in countries such as China and Iran."
I also came across to an informative research on the topic, "The Wireless Leash : Mobile Messaging Service as a Means of Control". Recommended reading in case you want to know more on the topic from a social and political perspective, as well as go through many relevant cases.
UPDATE : China restricts Internet cafe access - "Rules on children in Internet cafes were imposed after Chinese officials warned that students were spending too much time playing online games and were getting access to violent and obscene material."
Related resources:
Censorship
China
2006 = 1984?
Anonymity or Privacy on the Internet?
World's Internet Censorship Map
China - the biggest black spot on the Internet’s map
Chinese Internet Censorship efforts and the outbreak
Securing political investments through censorship