Focused on leading international document anti-counterfeit technology and latest document manufacturing process and technology over 30 years, Lieow Chuan has guided the development of multiple IST major projects, including Digital Image Processing Identity Document Manufacturing System, Research on TESLIN Application in Document Manufacturing Process, Digital Photo Online Standardization and Authentication System, Automatic Border Control System and ePassport Anti-counterfeit Film Project, which have been widely used in various fields such as Chinese personnel information management, immigration control, etc..