[gst]

Just a heads-up if you're planning to use passkeys with iOS/macOS: Might be fixed already, but last time I tried it out it seemed like iOS only stored a single passkey per domain. If you first store a passkey for a@domain and then later on store a passkey for a different user b@domain the a@domain passkey is overwritten without any warning. Or at least this seemed to be the case a couple of months ago when I tried it out.

[ezfe]

That would only happen if the site isn't properly giving the passkeys identifiers. Having single passkey/username combo is working as intended, but it shouldn't be overwriting different usernames.

[asimpletune]

For me at least it works. I have multiple accounts for the same domain and iOS/macOS prompt me to choose from the last one used, or I can choose to pick from a collection.

[judge2020]

All the way back in iOS 15, when getting passkeys meant building an xcode app to access the developer menu and enable passkeys, I had no trouble storing multiple per domain when adding passkeys to GitHub. Maybe the site you were trying to use sent the same `user.id` for both requests? /shrug