available plugins for MFA integration

[Cantor, Scott]

> In other words, even if Shib did FIDO2 all by itself people will still
> need something like PI to get strong auth for all their *other*
> systems: VPNs, WiFi, non-web, etc.

Right. Thus, my lack of understanding at how people are just "implementing FIDO" in various open source IdPs and what in the heck that even means, or how it's sufficient for anything.

-- Scott