John Seguin John Seguin has over 20 years of experience in the library industry and is the co-founder of Third Iron Library Technologies. Third Iron’s main services – LibKey and BrowZine – are now used in nearly 1,000 libraries in over 32 countries. John started his career as an academic librarian at the Missouri University of Science & Technology and also worked for ProQuest in higher education sales. In 2011 he co-founded Third Iron where he serves as President and Chief Librarian and focusses on product development and business strategy.