hunt and peck
hunt and peck  {n. phr.},  {informal}
Picking out typewriter keys by sight, usually with one or two fingers; not memorizing the keys. 
Many newspaper reporters do their typing by hunt and peck.
- Often used, with hyphens, as an adjective. 
Mr. Barr taught himself to type, and he uses the hunt-and-peck system.
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Source: A Dictionary of American Idioms
