A B Figure 1 . EyeScout is an active eye tracking system that enables gaze interaction with large public displays. It supports two interaction modes: In "Walk then Interact" the user can walk to a location in front of the display and the system positions itself accurately to enable gaze interaction (A). In "Walk and Interact" the user can walk along the display and the system follows the user, thereby enabling gaze interaction while on the move (B). While gaze holds a lot of promise for hands-free interaction with public displays, remote eye trackers with their confined tracking box restrict users to a single stationary position in front of the display. We present EyeScout, an active eye tracking system that combines an eye tracker mounted on a rail system with a computational method to automatically detect and align the tracker with the user's lateral movement. EyeScout addresses key limitations of current gaze-enabled large public displays by offering two novel gaze-interaction modes for a single user: In "Walk then Interact" the user can walk up to an arbitrary position in front of the display and interact, while in "Walk and Interact" the user can interact even while on the move. We report on a user study that shows that EyeScout is well perceived by users, extends a public display's sweet spot into a sweet line, and reduces gaze interaction kickoff time to 3.5 seconds -a 62% improvement over state of the art solutions. We discuss sample applications that demonstrate how EyeScout can enable position and movement-independent gaze interaction with large public displays.
The only exception is EyeScout REF , where an eye tracker was mounted on a rail system to allow the tracker to follow the user along the display.
EyeScout: Active Eye Tracking for Position and Movement Independent Gaze Interaction with Large Public Displays
UIST '17
Computer Science