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The process of confirming the subscriber’s continued presence and intent to be authenticated during an extended usage session.
NIST SP 800-63-3
Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.
Comments about the glossary's presentation and functionality should be sent to email@example.com.
See NISTIR 7298 Rev. 3 for additional details.