Watch this BBC reporter try to evade China’s massive CCTV network

BBC reporter John Sudworth recently got a peek behind the curtain at the world’s largest surveillance system. Tasked with remaining undetected by more than 170 million Chinese closed circuit television (CCTV) cameras, the exercise ended predictably with Sudworth being spotted and detained in about seven minutes. How long can a BBC reporter stay hidden from CCTV cameras in China? @TheJohnSudworth has been given rare access to put the world's largest surveillance system to the test pic.twit