From China in Transition blog:
China has established what is seen as the largest citizen identification information database in the world, the Ministry of Public Security announced this month.
The database contains the name and citizen identification card number of nearly 1.3 billion people in mainland China, as well as other personal information such as gender and date of birth. It took five years to establish this data system, which was accomplished at the end of last year.
The system will allow individuals and businesses to verify certain person’s identity, by submitting this person’s name and ID card number to the National Citizen Identity Information Center, which will compare the submitted information with that in its database and send results back to the service user, even with a picture of the person being checked. People can use the service on the Internet or by text messaging on cellphone. [Full Text]