Touch typing is typing without using the sense of sight to fin the keys. Specifically, a touch typist will know their location through muscle memory. Touch typing usually places the eight fingers in a horizontal row along the middle of the keyboard (the home row) and has them reach for other keys. Most computer keyboards have a raised dot or bar on either the F/J keys or the D/K keys (or the keys in the same position, for non-QWERTY keyboards) so that touch-typists can feel them when their fingertips are over the correct home row.