Identity Proofing Under NIST SP 800-63-4

How remote identity proofing should be engineered toward the NIST SP 800-63-4 model — evidence validation, document authentication, presentation-attack detection, biometric matching, and demographic differential performance — and what remains a measured, not designed, claim.

• The 800-63-4 family and the identity-assurance-level model
• Evidence validation and document authentication
• Liveness / presentation-attack detection (ISO/IEC 30107-3)
• Differential performance is a measured claim, not a design one