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Re: [webauthn] Consider allowing RPs to indicate that they want platform authenticators to be synced across devices

From: Patrick Toomey via GitHub <sysbot+gh@w3.org>
Date: Thu, 28 Jun 2018 18:47:23 +0000
To: public-webauthn@w3.org
Message-ID: <issue_comment.created-401135430-1530211642-sysbot+gh@w3.org>
> Yes, that is how the spec is written. See https://www.w3.org/TR/webauthn/#ref-for-enumdef-attestationconveyancepreference and https://www.w3.org/TR/webauthn/#enumdef-attestationconveyancepreference.

Gotcha. So, read another way, doesthe existing `AttestationConveyancePreference` roughly accomplish what is being discussed in this thread? If a RP wants to allow syncing, they give a attestation preference of `none` and if they don't, they specify `direct`. It isn't exactly the same thing. But, maybe for all intents and purposes it is unless https://github.com/w3c/webauthn/issues/931 outlines some means of backing up a attestation capable authenticator to another attestation capable authenticator. 

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