Full Title or Meme
The most common factor used today for Authentication to Authorize access to Resources on Web Sites is still the User Name and Password.
In this wiki the User Name is referred to as one of the following:
- User Identifier when the user is a natural person. (n.b. this should not be considered to the the real-world name of the user.)
- Subject Identifier or (sid) in the OpenID Connect specifications.
- Pseudonym when the Subject is not known to be (or is known not to be) a natural person.