This is a prototype for a secure terminal system. The system is designed to provide a GUI where clients can only write to certain parts of the display. It is setup with two components, one that has the region (0,0) - (15,10) and the other that has the region (20,20) - (35,30). Each application writes some sample output (provided as a CAmkES attribute) to its region.

Note that a full secure terminal would use a framebuffer rather than just console display, but this example is useful for experimentation.