TY - GEN
T1 - Investigating effects of post-selection feedback for acquiring ultra-small targets on touchscreen
AU - Yu, Chun
AU - Wen, Hongyi
AU - Xiong, Wei
AU - Bi, Xiaojun
AU - Shi, Yuanchun
N1 - Publisher Copyright:
© 2016 ACM.
PY - 2016/5/7
Y1 - 2016/5/7
N2 - In this paper, we investigate the effects of post-selection feedback for acquiring ultra-small (2-4mm) targets on touchscreens. Post-selection feedback shows the contact point on touchscreen after a user lifts his/her fingers to increase users' awareness of touching. Three experiments are conducted progressively using a single crosshair target, two reciprocally acquired targets and 2D random targets. Results show that in average post-selection feedback can reduce touch error rates by 78.4%, with a compromise of target acquisition time no more than 10%. In addition, we investigate participants' adjustment behavior based on correlation between successive trials. We conclude that the benefit of post-selection feedback is the outcome of both improved understanding about finger/point mapping and the dynamic adjustment of finger movement enabled by the visualization of the touch point.
AB - In this paper, we investigate the effects of post-selection feedback for acquiring ultra-small (2-4mm) targets on touchscreens. Post-selection feedback shows the contact point on touchscreen after a user lifts his/her fingers to increase users' awareness of touching. Three experiments are conducted progressively using a single crosshair target, two reciprocally acquired targets and 2D random targets. Results show that in average post-selection feedback can reduce touch error rates by 78.4%, with a compromise of target acquisition time no more than 10%. In addition, we investigate participants' adjustment behavior based on correlation between successive trials. We conclude that the benefit of post-selection feedback is the outcome of both improved understanding about finger/point mapping and the dynamic adjustment of finger movement enabled by the visualization of the touch point.
KW - Post-selection feedback
KW - Touch behavior
KW - Ultra-small targets
UR - https://www.scopus.com/pages/publications/85015070826
U2 - 10.1145/2858036.2858593
DO - 10.1145/2858036.2858593
M3 - Conference contribution
AN - SCOPUS:85015070826
T3 - Conference on Human Factors in Computing Systems - Proceedings
SP - 4699
EP - 4710
BT - CHI 2016 - Proceedings, 34th Annual CHI Conference on Human Factors in Computing Systems
PB - Association for Computing Machinery
T2 - 34th Annual Conference on Human Factors in Computing Systems, CHI 2016
Y2 - 7 May 2016 through 12 May 2016
ER -