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ITAC Systems is the maker of the most reliable and rugged trackballs in the world. Our units require no drivers and work with all major operating systems. We offer units for both the desktop and more industrial environments. ITAC Systems units are built with ergonomics in mind. In many cases they can reduce or eliminate common RSI......(More Information) 
Introducing the ITAC Systems HAND-TRAK. This unit features a small footprint, the ability to operate at any angle and can be panel mounted. The HAND-TRAK works on optical technology, and as such, eliminates drift associated with harsh vibrations or installations in moving vehicles. This unit is appropriate for several industry applications......(More Information)
Evolution: -nouna product of such development as to be considered...evolved.
That definition sums up the ITAC Systems evolution MOUSE-TRAK exactly. This unit features six user assignable buttons, optional high-speed scrolling and a highly ergonomic design......(More Information)