Ninja cursors aim to speed up target selection on large or multiple monitors. Several cursors are displayed on the screen with one of them selected as the active cursor. Eye tracking is used to choose the active cursor. An experiment with 13 participants showed that multiple cursors speed up the selection over long distances, but not over short distances. Participants felt the technique was fastest with 4 cursors per monitor, but still preferred to have only 1 cursor per monitor for their own use. Author Keywords Multiple cursors, Ninja cursors, selection, eye gaze. ACM Classification Keywords H.5.2. [Information interfaces and presentation (e.g., HCI)]: User Interfaces Graphical user interfaces (GUI).