I remember when CCTV really became a big thing. For years, London had the most cameras of any city in the world. Now it appears that London has slipped behind, now sitting third behind Beijing and Chongqing in China. Although, these days, it’s not so much about how many cameras you have as it is about how many megapixels each of them has.
At the China International Industry Fair last week, scientists revealed a 500-megapixel cloud camera system, which they says is capable of capturing facial details of every individual in a crowd of tens of thousands of people.