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Hans de Ruiter is Kea Sigma Delta Limited's founder. As a child/teenager he taught himself programming, constructed electronic circuits from kitsets, and also had a keen interest both science and in building things himself. Persuing these interests further, he gained a degree in electrical & electronic engineering (University of Canterbury), and eventually a Ph.D. from the University of Toronto. Hans also has a bit of an entrepreneurial streak, and so this company (Kea Sigma Delta Limited) was founded. It is a vehicle through which all of these interests can be persued. Aside from science and technology, most things interest him. That child-like curiosity of the world has never left him. In particular, he also enjoys hiking and the outdoors. Playing violin and piano are also spare time hobbies of his.