Experimental Safari Feature Supports USB Security Keys

In the experimental version of Safari Technology Preview, the browser adds support for USB security keys. This lets users log into services using this mode of two-factor authentication.

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Web Authn

USB security keys are the true form of two-factor authentication. When people talk about this mode of security, what they really mean is two-step authentication. Meaning you need two steps to log in: Your regular username/password, and a special one-time code. Two-factor-authentication means using a separate device like a USB key.

yubico sells USB security keys as shown here
Yubio USB key

The latest Safari Preview adds support for the WebAuthentication (WebAuthn) API. If you have a USB security key you can download Safari Preview version 71 here.

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