Dr Yu Xinge and his research team (IMAGE) City University of Hong Kong Caption Dr Yu Xinge (Central) and his research team at City University of Hong Kong, including Mr Zhou Jingkun (Right), Miss Wu Mengge (Left) and Mr Yao Kuanming developed the “WeTac” system. Credit City University of Hong Kong Usage Restrictions Image must be used with appropriate caption and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.