The target selection task, in which a user had to select rectangles of different sizes with their finger on a touch screen, showed an 31% increase in the time needed to select a target, an 23% increase in error rate and a 24% increase in task load between a standing and walking condition. The results also show that increasing the target size by 20% leads to significant improvements and with an increase of 40% can the negative effects of walking be almost completely compensated.