Using an eye tracker, we know the reading progress across a page, is it a cool idea? Text 2.0 project creates a eye tracking apps using HTML, CSS and JavaScript, as well as some diagnosis and related tools. It was developed by Ralf Biedert from the German Research Center for Artificial Intelligence.

My interest is that how precise it is? I think the technology will be useful for a lecturer to deliver a big lecture, for people to follow a presentation in a conference, or for teachers to see how students read and learn.