Passkeys are built on the FIDO2 standard (CTAP2 + WebAuthn standards). They remove the shared secret, stop phishing at the source, and make credential-stuffing useless.
But adoption is still low, and interoperability between Apple, Google, and Microsoft isn’t seamless.
I broke down how passkeys work, their strengths, and what’s still missing
The promise of passkeys when i first grad about them was that it would be quick and easy - that you wouldn’t need to enter a username or use 2fa. The reality appears to be that this is that it’s used ** as** 2fa
Personally, I found that It works well with Microsoft, Paypal, Google, Shopify and Proton. I was really surprised to find the option on German government sites, worked there as well. Tested in Ungoogled Chromium and Librewolf. The only thing I find dissappointing is adoption
Most of the sites I’ve seen use it as the single auth source. That said, using multiple forms of authentication in a layered model only improves security.