My primary research interests are
(text entry, pointing, touch, gesture, voice, gaze),
mobile user interfaces,
human performance measurement and modeling,
HCI research and design methods, and
computer access for people with disabilities.
I have a special focus on what I call
a design stance in which the human abilities required to operate a technology are questioned,
and systems are made operable by and adaptable to alternative abilities.
I am also an entrepreneur, having co-founded
and served as its venture-backed Chief Executive Officer
for nearly three years and its Chief Scientist for six months.
contextual help technology to websites,
increasing their sales,
reducing their support costs, and
generating insights about their customers’ needs.
come primarily from UW Ph.D. programs in
information science and
My students and I are active in the DUB Group.
I have worked in industry and
occasionally serve as an expert witness
on intellectual property matters.
ACM author page, or
Google Scholar page.
Or find me in the HCI Bibliography.