Born in the UK in 1961, raised in Canada, Tilden started at the University of Waterloo then moved on to the Los Alamos National Laboratory where he developed simple robots such as the SATbot which instinctively aligned itself to the magnetic field of the Earth, de-mining insectoids, "Nervous Network" theory and applications, interplanetary explorers, and behavioral research into many solar-powered "Living Machines" of his own design.
[3][4] Having left government service and moved to Hong Kong, Tilden currently works as a freelance robotics designer, consultant and lecturer.
A comprehensive article on Tilden (December-2010) by Thomas Marsh is viewable online through the "Robot" Magazine website.
Movies which feature his robots in prominent roles include The 40 Year Old Virgin, Paul Blart Mall Cop and X-Men: The Last Stand.
Tilden appeared in the 2016 documentary film Machine of Human Dreams, which showed the work of several prominent technologists based in Hong Kong.