First time auth on new hardware would certainly ask for at least a PIN but more likely your iCloud password. For the encryption keys to transfer I think you would also have to allow the request from some other device which currently held them.
The Secure Element would need to be upgraded to support "multi-tenancy".
That's all assuming the feature works by building on the existing infrastructure.
Ideally between your face and your iCloud password you could bring your "profile" to new hardware without having to touch an existing device. After the first time, just your face is enough.
The Secure Element would need to be upgraded to support "multi-tenancy".
That's all assuming the feature works by building on the existing infrastructure.
Ideally between your face and your iCloud password you could bring your "profile" to new hardware without having to touch an existing device. After the first time, just your face is enough.