It is quite cool. It's a shame they don't maintain that web site. Those PDF links worked not long ago... The only way to find out more now might be to email th

It is quite cool. It's a shame they don't maintain that web site. Those PDF links worked not long ago... The only way to find out more now might be to email the project at dynapad@hci.ucsd.edu or the author of that paper at dsbauer@cogsci.ucsd.edu.