Which country is the most heavily surveilled?

Which country is the most heavily surveilled is China, which has built the world's largest and most sophisticated video surveillance network. China has over 600 million CCTV cameras installed, roughly one camera for every two to three people, with major cities like Beijing, Shanghai, and Chongqing heavily covered. The government uses extensive facial recognition, AI analytics, and integrated public and private camera networks as part of Skynet and Sharp Eyes projects for public security and social control. Chinese surveillance includes not only cameras but also internet monitoring, social credit system, and mobile tracking. Other heavily surveilled countries include United States with about 50 million cameras and extensive private camera networks, United Kingdom with about 6 million cameras and high density in London, and India rapidly expanding. Per capita, China and UK are among highest, with London and Beijing having extremely high camera density. North Korea also has pervasive surveillance but less camera infrastructure and more human informants. China stands out for scale, integration, and use of AI to automatically track individuals, making it most heavily surveilled in terms of both number of cameras and integration with state control systems.