China's ambition to collect a staggering amount of personal data from everyday citizens is more expansive than previously known. Phone-tracking devices are now everywhere. The police are creating some of the largest DNA databases in the world. And the authorities are building upon facial recognition technology to collect voice prints from the general public. The Times' Visual Investigations team and reporters in Asia spent over a year analyzing more than a hundred thousand government bidding documents. The Chinese government's goal is clear: designing a system to maximize what the state can find out about a person's identity, activities and social connections. In a number of the bidding documents, the police said that they wanted to place cameras where people go to fulfill their common needs " like eating, traveling, shopping and entertainment. The police also wanted to install facial recognition cameras inside private spaces, like residential buildings, karaoke lounges and hotels. Authorities are using phone trackers to link people's digital lives to their physical movements. Devices known as WiFi sniffers and IMSI catchers can glean information from phones in their vicinity. DNA, iris scan samples and voice prints are being collected indiscriminately from people with no connection to crime. The government wants to connect all of these data points to build comprehensive profiles for citizens " which are accessible throughout the government.