From Longman Dictionary of Contemporary Englishtap something ↔ in (also tap something into something) phrasal verb British EnglishTDto put information, numbers etc into a computer, telephone etc by pressing buttons or keys Tap in your password before you log on. → tap→ See Verb table
Examples from the Corpus
tap in• The only means of controlling the temperature of the water in the kettle is the gas tap.• The sad truth is that this source of power is already nearly tapped out.• The Travel Water Filter, £7.99, from Spong Housewares will purify all suspect tap water in a two-stage process.• Every night I come in and tap dance in costumes.• All of them with a tap root deep in history and branches lost in mysterious mist.• But traditional drilling techniques could tap the oil in only a small number of these cracks.• She tapped her hands in the doorway. 