At Apple's 2010 iPad debut, its inventor, the late Steve Jobs, touted the finger as the ultimate input device — no extra hardware to keep track of or lose. Times have changed radically, and starting ...

Mice come in all shapes and sizes—some are clunky, ergonomic beasts that seem to have a nook and cranny tailor-made for every part of your hand. Others are low and smooth, so slight as to be almost ...