China's rapidly evolving surveillance technologies have snared their share of fugitives in recent years. Most of these cases have involved facial recognition cameras, which can detect individual facial features regardless of glasses, hats or masks. There were the 80-odd wanted suspects picked out of crowds of tens of thousands of fans at concerts by Jacky Cheung, a legendary Hong Kong pop star. In April this year, a genius student wanted on suspicion of killing his mother was caught after being on the lam for almost four years. He was nabbed within 10 minutes of entering Chongqing airport, local media outlet Southern Metropolis Daily reported.