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WebAuthn (Web Authentication )and FIDO (Fast IDentity Online)are closely related but refer to different parts of the same ecosystem of passwordless authentication. Here’s a simple breakdown, especially for educators:
WebAuthn vs. FIDO – What’s the Difference?
|
Term |
What It Is |
Key Role |
Example |
|---|---|---|---|
|
FIDO |
A set of protocols created by the FIDO Alliance |
Defines how passwordless authentication should work securely |
FIDO2, FIDO U2F |
|
WebAuthn |
A web standard from W3C, part of FIDO2 |
Allows web applications to use public-key credentials (biometrics, security keys) |
AUSD login portal using fingerprint or YubiKey |
In Simple Terms
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FIDO is like the blueprint or architecture.
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WebAuthn is the toolset for browsers and web apps to follow that blueprint.
How They Work Together (Example):
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A Chromebook or PC supports FIDO2.
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AUSD’s login portal is built with WebAuthn support.
-
A student logs in using their fingerprint sensor.
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Behind the scenes: WebAuthn runs the process, FIDO2 defines the security rules.
