What does Touch Typing refer to?

Context: Touch typing is a style of typing. Although the phrase refers to typing without using the sense of sight to find the keys—specifically, a touch typist will know their location on the keyboard through muscle memory—the term is often used to refer to a specific form of touch typing that involves placing the eight fingers in a horizontal row along the middle of the keyboard and having them reach for specific other keys. Both two-handed touch typing and one-handed touch typing are possible.

Answer: Touch typing refers to typing without using the sense of sight to find the keys