~~NOTRANS~~
~~Title: Biometric & PIN security~~
It doesn’t take much effort to add biometric or PIN authentication to an application. Just configure it!
We support 3 layers:

  * Application security
  * Screen security
  * Button security

To configure application security, simply enable biometric authentication in mobile.xml:

<file mobile.xml>
<FlutterMobile>
  <parameters>
    <!-- Biometric login -->
    <Mobile.login.biometric>true</Mobile.login.biometric>
  </parameters>
</FlutterMobile>
</file>

This option will show biometric or PIN authentication (depends on your device configuration) immediately after first successful manual login:

{{:flutterui:app_secure.png?nolink&300|}}

You will need to re‑authenticate after a longer period of inactivity or if you resume the app after a pause. The biometric authentication is active as long as you don't do a manual logout.

If it's good enough to secure your application on screen level, just add the style:

''f_secure''

to your screen(s) and you'll see a skeleton:

{{:flutterui:screen_secured.png?nolink&300|}}

until successful authentication. 

The last option is a security mechanism for single button clicks:

{{:flutterui:button_secured.png?nolink&300|}}