Dwell clicking lets a user click by pausing their pointer over a target for a configurable amount of time, rather than pressing a physical button, and is commonly used with eye-tracking, head-tracking, and some switch-based systems where a separate click action is impractical or impossible.
Interfaces with hover-triggered menus or tooltips can conflict with dwell clicking, since pausing to read a hover menu may itself trigger an unwanted click. Reliable dwell support depends on interactive elements being large enough and far enough apart that a natural pause does not select the wrong target.