Earlier quoted context omitted.
Although i have heard of SQRL [1] which purports to be a frictionless way of securely logging in with public private key encryption. I've never seen it discussed here though so I'm unsure if there's significant downside [1]: https://www.grc.com/sqrl/sqrl.htm
This sounds a lot like passkeys https://developers.google.com/identity/passkeys - I'd be interested to see a more thorough comparison of the two. Both of these do a challenge-response style authentication with a particular website, and wouldn't really work as part of a decentralized system. You could use the same signing key ordinarily used to sign authentication challenges to sign nostr notes, but then you're back t…
That greater compatibility came with some UX trade-offs though. Now that passkeys exist and are widely supported by web browsers there's really no need for SQRL anymore; passkeys are a far more polished version of the same concept.