X is the rebranding of the social media service, Twitter (a microblogging and social networking service where users share short posts, images, and videos).

Once you have registered your FIDO2 key with X, the key will be ready to be used as an authentication method when accessing your account.

Register your FIDO2 key in your X account

Before you can use your FIDO2 key as an access method for your X account you will need to register the key with X using the following procedure;

Signing in to an X account with a FIDO2 key

Once you have registered you FIDO2 key with X the key will be ready to be used as an authentication method when accessing your account;

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