Anonymity - Compared With Pseudonymity

Compared With Pseudonymity

Sometimes it is desired that a person can establish a long-term relationship (such as a reputation) with some other entity, without necessarily disclosing personally identifying information to that entity. In this case, it may be useful for the person to establish a unique identifier, called a pseudonym, with the other entity. Examples of pseudonyms are pen names, nicknames, credit card numbers, student numbers, bank account numbers, and IP addresses. A pseudonym enables the other entity to link different messages from the same person and, thereby, the maintenance of a long-term relationship.

Someone using a pseudonym would be strictly considered to be using "pseudonymity" not "anonymity", but sometimes the term "anonymity" is used to refer to both (in general, a situation where the legal identity of the person is disguised).

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