hunt and peck

The hunt-and-peck typing technique.

to typewrite in an awkward, unskilled way, with two or even a single finger.

Describing a method of typing used by a person unfamiliar with the layout of a keyboard or keypad in which the person has to search for the keys to be pressed or struck one by one and uses one or both index fingers to operate the keys; also used to describe a typist who uses this technique.