My primary research interests are
input techniques (text entry, pointing, touch, gesture, voice, gaze),
mobile and tabletop 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
I served as AnswerDash's venture-backed C.E.O. from 2012-2015,
stepping down to become its Chief Scientist in May 2015.
context-sensitive help for the web,
increasing online sales,
reducing customer support costs, and
giving insights about 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.