GazeLaser: A Hands-Free Highlighting Technique for Presentations.

Presentation aids, such as the laser pointer, are commonly used in lectures and public speeches. Their effect on the audience has not been properly studied. We present an experiment that compares several pointer alternatives. One of them is GazeLaser, a new solution that does not need a manually operated pointer, but is based on the lecturers' gaze. It fares well in comparison, but comes second to the pointing tool available in PowerPoint. The experiment brings up issues that need to be taken into account when developing GazeLaser further.