Use Touch ID from Authorization plug-in

I'm testing Touch ID API within a custom Authorization Plug-in (LAContext stuff).

All I need, it would be nice to have this, is to use Touch ID as an additional authentication factor for logging into the system.

But in order to use Touch ID, the user must log in at least one time using his existing username and password.


As soons as the user logged in, Touch ID works as expected.

Is it possible to avoid this somehow, and to use Touch ID with entering user credentials for the first time?

I understand this is for a security reason. But is there any way to override the default behaviour from the API ?


Thanks in advance.