This book constitutes the thoroughly refereed post-proceedings of the 8th IFIP International Conference on Engineering for Human-Computer Interaction, EHCI 2001, held in Toronto, Canada, in May 2001. The 21 revised full papers and 4 revised short papers presented have passed through 2 rounds of reviewing and improvement and were selected from more than 50 submissions. The papers are organized in topical sections on software engineering methods, formal methods, toolkits, user interface evaluation, user interface plasticity, 3D user interfaces, input and output devices, mobile interaction, and context sensitive interaction.