Zoom Interface

A user interface technique that allows users to magnify a portion of the screen to increase the effective size of interface elements, making them easier to select with low-precision pointing devices such as eye trackers or head mice. Unlike simple screen magnification for low vision users, a zoom interface in the context of motor accessibility is used to compensate for the limited pointing accuracy of alternative input devices by artificially enlarging targets. Research has shown that adding zoom capability to eye-gaze systems can improve pointing efficiency by over 36%, bringing performance close to that of conventional mouse interaction by reducing the precision required for target selection.