  With two studies, we assess how different walking trajectories (straight
line, circular, and infinity) and speeds (2 km/h, 4 km/h, and 6 km/h) influence
the accuracy and response time of participants reading micro visualizations on
a smartwatch. We showed our participants common watch face micro visualizations
including date, time, weather information, and four complications showing
progress charts of fitness data. Our findings suggest that while walking
trajectories did not significantly affect reading performance, overall walking
activity, especially at high speeds, hurt reading accuracy and, to some extent,
response time.
