Keeping your eyes on the road gets ever more difficult with ever-bigger, ever-brighter GPS navigation units hitting retail. This product of University of Utah research could obsolete them entirely by tickling your fingers. It's called "shear feedback," effectively stretching the skin on your fingertip to tell you which way to go, achieved via a pair of old Thinkpad trackpoints, which were always too coarse a grit for our delicate tastes. The nub moves left or right to tell yo
