Our earPod prototype
is based on a USB
touch pad with an overlay limiting access to a round area.
EarPod partitions this round area into 4 or 8 zones, each
corresponding to one menu item. This allows experienced users to
operate menus without iterating. In addition, earPod provides users with auditory feedback
as they drag their finger between zones. This allows inexperienced users to
learn menu choices without looking.
Many mobile devices, such as mobile audio player require
the user's full visual attention. This tends to interfere with many
mobile activities, such as driving. EarPod is an eyes-free menu
technique using touch input and reactive auditory feedback. Studies
comparing earPod with an iPod-like visual menu technique on
reasonably-sized static menus indicate that they are comparable in
accuracy. In terms of efficiency (speed), earPod is initially slower,
but outperforms the visual technique within 30 minutes of practice. Our
results indicate that earPod is a reasonable eyes-free menu technique for general use, and is a particularly exciting technique for use in mobile device interfaces.
Zhao, S., Dragicevic, P., Chignell,
M., Balakrishnan, R., and Baudisch, P. earPod: Eyes-free Menu Selection using Touch Input
and Reactive Audio Feedback. In
Proceedings of CHI 2007,San Jose,
CA, Apr 28-May 18, 2007, pp. 1395-1404. PDF (1.5M) | PPT (11.8M)| WMV (4.8M)