A username is the name or ID you use to sign in to a website, app, or computer system. It helps the system tell one user from another and is often used with a password for login.

Quick Scoop

  • A username can also be called a user ID , login name , or account name.
  • It is usually unique for each account.
  • Example: in a login form, you might enter your username and password.

In simple words

Think of a username like your digital label. It is the name that identifies you online, while the password proves it is really you.

Example

  • Username: alex_92
  • Password: hidden secret

If you want, I can also explain the difference between username , display name , and email address.