Speculations have turned out be true. The Chinese government is now testing systems that will be used to create digital records of citizens' social and financial behavior. In turn, these will be used to create a so-called social credit score, which will determine whether individuals have access to services, from travel and education to loans and insurance cover. Some citizens -- such as lawyers and journalists -- will be more closely monitored. From a report on MIT Technology Review: Planning documents apparently describe the system as being created to "allow the trustworthy to roam everywhere under heaven while making it hard for the discredited to take a single step." The Journal claims that the system will at first log "infractions such as fare cheating, jaywalking and violating family-planning rules" but will be expanded in the future -- potentially even to Internet activity. Some aspects of the system are already in testing, but there are some challenges to implementing such a far-reaching apparatus. It's difficult to centralize all that data, check it for accuracy, and process it, for example -- let alone feed it back into the system to control everyday life. And China has data from 1.4 billion people to handle.