Two Form Three students from Maryknoll Fathers' School won the international group championship in the Young Scientists (Unge Forskere) competition held in Denmark. Steven Lau Tak-shing and Ivan Lau Tak-kin beat their competitors with the anti-bumping lock they invented during a summer programme at City University of Hong Kong (CityU) in 2006. During the programme, the boys studied how bump keys, a device used by locksmiths to open pin tumbler locks, worked, and developed their 'anti-bump' concept. The professors at CityU were impressed by their idea and encouraged them to develop it further. With the help of technicians, the students studied the structure of pin tumbler locks and eventually created the prototype for the anti-bumping lock. They took out a patent on the design which was purchased by a mainland lock factory. Before their recent success, Steven and Ivan had already won a number of competitions. They received first class awards in the Hong Kong Youth Science and Technology Invention Competition 06-07 and the 22nd China Adolescents Science and Technology Invention Contest. They are also reigning champions of the Hong Kong Student Science Project Competition 2007. Ivan and Steven are currently preparing for next month's Intel International Science and Engineering Fair.