what is user name

A username is a unique sequence of characters used to identify a user and allow access to a computer system, computer network, or online account. It is a special name given to a person to uniquely identify them on a computer network. Also called account names, login IDs, or user IDs, usernames are given to a person by the network administrator or they are selected by the user. A username may not be the same for more than one person, as it is intended to distinguish one user from another. Usernames play a significant role in maintaining personal files and settings on the same computer as an online service. For instance, when a user logs into a new website, they may maintain their identity by using the same username. To log in to their email account, one must know their username and password. A username is not equivalent to an email address, although it is common for a username to be a person’s email address, since those are unique and not shared with other users.