![]() The $99.99 Expert Mouse Wireless Trackball is comfortable to navigate, and compact enough to suppress strenuous motions. It should come as no surprise that Kensington, a company known for making trackballs, would design what I see as the platonic ideal of the form. ![]() ![]() They offer economy of movement-all the work falls to a few fingers that, while they move a lot, never have to stretch. But if you have wrist or shoulder troubles, trackballs keep your whole arm still. It can feel strange to switch from using a mouse, which feels like an extension of your arm, to rolling a ball to move your cursor. Like many ergonomic products, trackballs are an acquired taste-often, acquired by sheer painful necessity. ![]() ![]()
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