Fid.Gen is a general purpose generator for designing and tailoring custom fiducial markers to be used in reacTIVision based projects. The layout of the markers is physics driven and realised by a network of springs. There are numerous parameters to adjust the size & complexity of the markers.

Fitts' Law: So you think you are an interaction designer? Not if you cannot answer all the following questions quickly and with authority.

move over, Director

blog by a GNOME hacker/UI designer

great archive of GUI history

a shareware primer from '93

marius watz

A user interface is well-designed when the program behaves exactly how the user thought it would.

which went on to become a staple model in Vista/OS X

The ubiquity of frustrating, unhelpful software interfaces has motivated decades of research into “Human-Computer Interaction.” In this paper, I suggest that the long-standing focus on “interaction” may be misguided.

Once upon a time, computers were controlled by commands. The interaction paradigm was based upon a control language. Then graphical user interfaces (GUI) appeared.

All kinds of insight about pie menus