officials showed up this sprawling port where thanks to ai, human workers are being replaced. these automatic cranes are dropping off containers on to driverless cars. yes! those little blue trucks. yes. reporter: a every day with companies like amazon and netflix using it to rank products based watched, china is now using ai to rank its people. there are an estimated 200 million surveillance cameras in china and now they not only know where you are, they know who you are. many of the surveillance cameras feed into an ai system which can not only recognize your face but bring up your name, your social media activity, financial status, and criminal record. the ai calculates what s called a social credit score. if your score drops