Friction and Trackballs

[Neil B]

From what I know there are two kinds of non-slip matting: There's the more foam-like kind which is typically very sticky to almost everything relatively smooth. Then there's a more rubber-like kind that really only sticks to glass or smooth plastic but not much else.

In general I think softer gripping materials will provide you with more grip. Or you could just squeeze the trackball with lots of force; either one should work.