digital identity

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Definitions:

The unique representation of a subject engaged in an online transaction. A digital identity is always unique in the context of a digital service, but does not necessarily need to uniquely identify the subject in all contexts. In other words, accessing a digital service may not mean that the subject’s real-life identity is known.
Sources:
NIST SP 800-63-3

Glossary Comments

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See NISTIR 7298 Rev. 3 for additional details.