title: Sign in with fingerprint in oauth 2.0
body: <p>I have a REST api secured with an OAuth 2.0 authentication model. Now I have a client that would like to develop a mobile application (Android) that will use this API. This applicaiton will use the built in fingerprint scanner inn Android for login. Do anyone have any suggestions for how this application should do the authentication against my OAuth 2.0 service? When we have created mobile applications before, we have used the standard Oauth login where the application opens the default browser and logs in using the standard Oauth login process, but what to do if the user should be able to login using fingerprint?</p>