Crossing-Based Interaction

An alternative to traditional point-and-click interaction where users select a target by dragging across its boundary rather than tapping or clicking on it. Instead of requiring a precise tap within a target area, crossing-based interaction registers a selection when the user's input path intersects a target's edge. This technique can benefit people with motor impairments because it leverages continuous movement rather than discrete positioning, potentially reducing the precision demands of target selection. Research has shown crossing to be competitive with tapping for accessibility, though it requires more complex motor planning and may involve longer movement times.