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Definitions Edit

Biometrics Edit

An identifier is

[a] unique data string used as a key in the biometric system to name a person's identity and its associated attributes."[1]

General Edit

An identifier is

a piece of information, such as a name, a serial number, or some other data that points to the entity being identified.
a series of digits, characters and symbols or any other form of data used to identify subscriber(s), user(s), network element(s), function(s), network entity(ies) providing services/applications, or other entities (e.g., physical or logical objects).[2]
[i]dentity information that unambiguously distinguishes one entity from another one in a given identity domain.[3]
[a] data object uniquely referring to a specific identity of a protocol entity or individual in some context. . . . Identifiers can be based upon natural names — official names, personal names, and/or nicknames — or can be artificial (for example, x9z32vb). However, identifiers are by definition unique within their context of use, while natural names are often not unique.[4]

Overview Edit

"An identifier points to an individual. An identifier could be a name, a serial number, or some other pointer to the entity being identified. Examples of personal identifiers include personal names, Social Security numbers (SSNs), credit card numbers, and employee identification numbers. It is sometimes necessary to distinguish between identifiers and the things that they identify."[5]

References Edit

  1. FIPS 201.
  2. NSTAC Report to the President on Identity Management Strategy, at C-3.
  3. Framework for Cyber-Physical Systems, at 12.
  4. Privacy Considerations for Internet Protocols, at 9.
  5. Who Goes There?: Authentication Through the Lens of Privacy, at 18.

See also Edit

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