Grifcat is a simple utility which monitors a
Griffin Powermate and sends state change
information to the calling script. It tracks the
button and wheel motion, reporting each move as it
occurs and accumulating net changes in both
directions. It is convenient for script writers
and those looking for an easy way to integrate the
powermate into their applications via a simple
coprocess. Grifcat uses libusb to access the USB
in a platform independent manner.