While Michael was studying computer science at Otago he became interested in a project for the Department of Physiology, who were dissatisfied with the performance of their old paper chart recorders and asked Michael to develop a computer-based system to replace their old paper-based one. The project led to the co-founding of ADInstruments, which manufactures similar products for the world market. ADInstruments now has nine company offices and over 40 distributors worldwide, although the research and development office is still in Dunedin. The company specialises in data acquisition systems for the life sciences.