Username, user name, user id, login, login name, and login id are synonyms.

The terms username, user name, and user id are ambiguous because the term user is ambiguous and may (or may not) imply that the subject linked to the digital identity is a person.

The terms username, user name, and login name are ambiguous because, in the context of authentication, the word “name” implies that the unique identifier used to authenticate is the common name of the user, which is wrong in many identity management systems. For scientific papers, the term user ID should be preferred as it is

The term login id being more generic and accurate .Similarly, the term user implies that the subject or entity linked to the digital identity is a person. For this reason, the terms subject id or entity id would be even more generic and accurate but they are not in common useshould thus be preferred. But in practice, the other forms are in widespread usage.

Sample Sentences

For most applications, Bob used his email address has his username.

Related Terms