Dwell Time

The length of time a user must maintain their gaze on a target element to trigger a selection in eye gaze technology systems. Dwell time is a critical parameter in gaze-based interfaces: too short and users make unintended selections (the "Midas touch" problem), too long and communication becomes frustratingly slow. Typical dwell times range from 0.5 to 2 seconds. Adjusting dwell time sensitivity is important for accommodating individual users' motor control abilities and reducing fatigue during extended use of gaze-based communication devices.