Web Authentication and iFrames for web payments use cases

Hello everyone

On our call today [1] we discussed whether there was a need for Web
Authentication to be available within an iFrame to support web payments use
cases. It's certainly the case today that iFrames are used in many payment
experiences - we would like to hear from working group members who believe
that there are use cases to support WebAuthn for authentication within an
iFrame. Note that this is not currently supported in v1 of Webauthn so
essentially we are asking in case this is something that we might suggest
as a post-V1 requirement,

We will also make time to discuss this at the F2F meeting [2]

Looking forward to seeing many of you in California.

Thanks
Nick


[1] https://www.w3.org/2019/03/21-wpwg-minutes#item01
[2] https://github.com/w3c/webpayments/wiki/FTF-Agenda-201904