Re: [webauthn] authenticator taxonomy

WRT the term "first-factor" -- it is one of those invented-during-a-meeting-while-in-a-rush things that was not carefully thought-through or researched prior to being employed. It turns out we perhaps ought to have simply referred to NIST SP800-63-2 and used "multi-factor authenticator".  [See S 6.1.1](http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-63-2.pdf). 

Additionally, in NIST SP800-63-2 parlance, U2F security keys are termed "single-factor". 


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Received on Tuesday, 25 April 2017 22:15:34 UTC