Transferring Passkey from one Device to another

[Absaar1548]

"I am working on a passkey demo and have successfully implemented a basic registration and authentication flow. Now, I want to add a feature that allows the transfer of a passkey, mainly a private key, stored on Device 1 to Device 2. Is there a way to extract the private key from one device and load it onto another device?"

[lmarschall]

As far as I know, you won't be able to retrieve the specific key directly from the authenticator on your device, but passkeys are synced across your iCloud / Google Keychain eventually.