Sign in phrase informal
To record one's or another's attendance or arrival in a log book or register
All guests must sign in at the front desk.
To log in.
Only premium members can sign in and download!
To allow someone to log into a digital account or network.
Hey guys, can you sign me in to Facebook? I'm having difficulty logging into my account.
The act of inputting personal credentials to get access to a digital account or network.
Please fill in your pin code to complete the sign-in.
To sign a document that one loses or gives up his or her property or legal rights
To refer to a clear sign that something bad will probably occur.
Positive signs that a situation is in the process of improvement, especially an economic situation.
To sign one's name in some documents or materials
The verb "sign" should be conjugated according to its tense.