Looks like a huge amount of security vendors are working to have a secure and open standard for passkey portability between platforms.
It is always good to see major collaboration in the security space like this considering the harsh opinions that users of some of these vendors have toward many of the others. I just wish apps and sites would stop making me login with username and password if passkeys are meant to replace that lol.
That doesn’t transfer the private key though (or at least it shouldn’t).
I’m pretty sure it’s just transferring public keys and signing the response with the private key on your phone.