It's a really recent addition to Chrome/Edge to support that, and it only was supported on iOS in v17 which came out last week. Actually, 1Password probably rel

It's a really recent addition to Chrome/Edge to support that, and it only was supported on iOS in v17 which came out last week. Actually, 1Password probably released their support for Passkeys last week precisely because iOS 17 was finally out. For reference, I just 5 minutes ago opened GitHub in Edge on my iOS device, clicked "Sign in with Passkey", and 1Password correctly popped up and offered to sign in with the passkey I had created in Edge on my desktop. I then opened Safari on my phone, and did the same thing. So it definitely is getting there.