This is a big worry for the Chinese government, which as of January 2013, had installed some 20 million cameras on streets, public parks and even in elevators throughout China. So is the government going to redouble its already controversial efforts to reduce pollution? Probably not. Yang told the SCMP her team would “heavily revise, if not completely rewrite, algorithms in some mathematical models” for the imaging software used with the security cameras. The effect of the pollution might be to make China’s surveillance state even better at its job.