Any data on best control placement on inclined touch screens?
7 Oct 2007 - 2:52pm
7 years ago
Our team has been been given the task of redesigning a set of kiosk
interfaces. We have the opportunity to rearrange the navigation
controls, but we have no feedback from users regarding the current
layout and no budget to do usability studies or user interviews.
I'd like to do a survey of literature to guide best placement of the
navigation controls, and I'll need data in order to continue the
project of teaching our designers and clients that "it looks good" is
not a sufficient strategy in UI layout.
A few of the kiosks are inclined touchscreens placed at about waist
height on a standing adult -- the user audience can range in age from
12 to 90 years. (Don't even get me started on the problem of
accommodating blind or wheelchair-bound visitors. Luckily, there are
live sales attendants on hand.)
The screens are about tabloid-sized (A3 for those of you using a real
measurement system), in landscape orientation. The same UI layout is
used on a similar set of standard non-touch monitors, with mouse-
controlled pointers. We'd like to use the same UI on both sets of
Currently, the navigational controls are arrayed in two groups - a
vertical bar on the left and a strip of buttons at the bottom. It's
unlikely that any one visitor would use the touch-screens for more
than 10 minutes at a time, and no text input is required for the
The primary content is displayed in a large rectangle above and right
of the navigation controls, and we can't divide or obscure the
content without a much bigger re-design than we're currently
My current thinking is that we need to push all the nav controls
(between 6 and 9 buttons) into one relatively compact group (probably
the left column) to avoid requiring the user to simultaneously hold
the arm aloft and track left-right while acquiring the target.
Any other advice you can give would, as always, be most welcome.