Difference between revisions of "Subject ID"
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* Many web sites require users to have a persistent user name which is unique on their site to identify the user. | * Many web sites require users to have a persistent user name which is unique on their site to identify the user. | ||
* As a general rule [[Web Site]]s, and as a practical rule [[Identifier or Attribute Provider]]s require that the pseudonym be unique within their domain; thus the pseudonym@domain.tld will be a valid [[URI]]. | * As a general rule [[Web Site]]s, and as a practical rule [[Identifier or Attribute Provider]]s require that the pseudonym be unique within their domain; thus the pseudonym@domain.tld will be a valid [[URI]]. | ||
| − | * Some providers will reuse | + | * Some providers will reuse [[Subject ID]]s once a connection to a real user has been broken for some specified period of time. Email addresses, in particular, typically have this characteristic. A fully compliant implementation would not reuse [[Subject ID]]s. |
==Problems== | ==Problems== | ||
Revision as of 10:27, 12 September 2018
Full Title or Meme
A Subject ID is a digital Identifier associated with some real-world Entity that has established an interchange on the internet by means of a User Agent.
Context
- Many web sites require users to have a persistent user name which is unique on their site to identify the user.
- As a general rule Web Sites, and as a practical rule Identifier or Attribute Providers require that the pseudonym be unique within their domain; thus the pseudonym@domain.tld will be a valid URI.
- Some providers will reuse Subject IDs once a connection to a real user has been broken for some specified period of time. Email addresses, in particular, typically have this characteristic. A fully compliant implementation would not reuse Subject IDs.
Problems
- Users may wish to have some name that is not associated with their real name when the web site requires a persistent user name.
Solutions
- Users are often asked to use their email address as a local user name since the email address is known to be a URI and hence unique in the internet.
- When the user has an option, they often pick some sort of description name, such as a gamertag in a role playing game, which is tested for uniqueness within the relevant name domain.
- When a user needs to provide some sort of validated attribute for the duration of a session at a web site, a session ID might provide sufficient security to bind the verified attribute for the session duration.
References
- Synonyms for a Subject ID include User Name, display name, gamertag, nom de guerre, Pseudonym or (on Facebook) Fake Name subject to arbitrary termination.
- Anonym is not used in the context of identity as it does not provide one. It may be used as the condition (Anonymous) of a user prior to accepting (1) a cookie, (2) a fixed IP address, (3) an HTTPS connection or (4) a request for an Identifier.
