What is Identity Authentication?
Identity authentication is the act of confirming the individual engaging with your system is the legitimate account holder at that moment. It’s the runtime sibling of identity verification. Techniques include “something you know” (please stop), “something you have” (OTP, FIDO keys), and “something you are” (biometrics). Robust systems combine multiple factors, monitor context, and adjust friction based on risk.
Practical form factors: device binding and resilient MFA for baseline access; higher bars for privilege changes, new payees, and recovery. Biometrics should incorporate anti‑spoofing and—when used for enrollment or high‑value transactions—tie back to strong identity verification. Keep your fallback paths secure but humane; lockouts are a factory for support fraud.
