Just wanted to add to this, there are two approaches to getting webauthn support on to dash forums:
- Use this Xenforo addon https://xenforo.com/community/resources/digitalpoint-security-passkeys.8738/
- Migrate to discourse.org which has webauthn already built-in.
Offering multiple 2FA options is always preferable. Many well-known sites already use this eg. twitter, google, cloudflare, protonmail even yahoo. The general direction of the industry is moving towards better FIDO support.
Many of us have hardware wallets(or at least should) and they more than likely support some kind of U2F. I know for certain Trezor, KeepKey and Ledger does. It all but eliminates phishing attacks and if all that's needed to support this is adding a forum plugin, well why not? It's an increase in security without too much effort.
Why would you need to login to the Forum from a hardware wallet? This is a discussion website, not a wallet or exchange.
It doesn't have to be a hardware wallet, it's just an example. Any FIDO compliant security key will work.
Not sure if that question's directed at me. In terms of mathematical proof of identity are you referring to something like signing a message or post with GPG? or better yet a Dash address?