The development of cheaper eye trackers and open source software for eye tracking and gaze interaction brings the possibility to integrate eye tracking into everyday use devices as well as highly specialized equipment. Apart from providing means for analyzing eye movements, eye tracking also offers the possibility of a natural user interaction modality. Gaze control interfaces are already used within assistive applications for disabled users. However, this novel user interaction possibility comes with its own set of limitations and challenges. The aim of this SIG is to provide a forum for Designers, Researchers and Usability Professionals to discuss the role of eye tracking as a user interaction method in the future as well as the technical and user interaction challenges that using eye tracking as an interaction method brings.