A single control element device provides a user with absolute coordinate
information and enables user control of a computer cursor and emulation
of mouse clicks. The single control element is user-moved relative to a
surface having a dynamic coefficient of friction that reduces false
double-clicks. The device may be used by handicapped persons and emulates
left mouse clicking and double clicking by recognizing downward force of
the single control element into the surface, and recognizes upward
movement of the single control element away from the surface as a right
mouse click.