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1. verb To access a digital account or network, typically by entering personal credentials; to sign in. I'm having trouble logging in to my computer, so I haven't had a chance to check my email yet.
2. verb To allow someone to digital account or network; to sign someone in. In this usage, a noun or pronoun can be used between "log" and "in." I've having trouble accessing my account from home—any chance IT can log me in remotely?
3. noun The act of accessing a digital account or network, typically by entering personal credentials. In this usage, the phrase is sometimes hyphenated or spelled as one word. If we make the log-in too difficult, no one will use the app.
4. noun One's credentials or username for accessing a digital account or network. In this usage, the phrase is sometimes hyphenated or spelled as one word. What's your log-in? I'm going to see if we have you in our database.
Also, log on. Enter into a computer the information needed to begin a session, as in I logged in at two o'clock, or There's no record of your logging on today. These expressions refer especially to large systems shared by numerous individuals, who need to enter a username or password before executing a program. The antonyms are log off and log out, meaning "to end a computer session." All these expressions derive from the use of log in the nautical sense of entering information about a ship in a journal called a log book. [c. 1960]
1. To provide the necessary information to a computer for someone to be allowed to access computer resources; log on: I'll log you in so that you can access the library's resources. I sat at the terminal and logged in using my student account.
2. To spend some amount of time working: We've logged in 100 hours working on this project.