To use a physical or virtual keyboard in order to input some information. A noun or pronoun can be used between "type" and "in." I always make sure no one is nearby when I type in my password to log in to my computer at work.Here, type your number in on my phone so that I can get in touch with you later.
type in
v.
To input something into a computer or similar device by typing: You can type in your query when the prompt appears on the screen. Type your name in and click the button to access your account.