From Longman Dictionary of Contemporary Englishkey something ↔ in phrasal verbTDto put information into a computer or other machine, using buttons or a keyboard Key in your password and press ‘Return’. → key→ See Verb table
Examples from the Corpus
key in• And that is the key distinction.• The key factor then in a conflict of obligations between profession and employer is the librarian's obligations to family and career.• The key word in doing this is attitude.• In other words, the division of labor is also a key factor in the development of new technology.• Conversely, the lack of adequate financial planning is often a key element in the failure of many business enterprises.• When they reached the apartment's front door they heard the key turn in the lock on the far side.• The book explains in detail the 20 key points examined in the test.From Longman Business Dictionarykey something → in phrasal verb [transitive]COMPUTING to put information into a computer or other machine, using a keyboard or keypadThey keyed in the text. → key→ See Verb table 