Hello @IQ78

below i share the Touch ID sample forge this will help you to understand step by step process 

https://www.outsystems.com/forge/component-overview/6230/touch-id-login-sample-o11

Regards 

Nikhil Kumar Vijay

Hello @IQ78 

1. You need to install the Touch ID Plugin from the Forge Component.
   
   Forge Asset:
   https://www.outsystems.com/forge/component-overview/1431/touch-id-plugin-o11
   
   
2. Go to your application and consume the dependencies
3. Go to your screen application and add a screen / client action
4. Inside your client / screen action, add the action (TouchID) from the Forge Component.
   -First is to validate the component to identify if it was available.
   -After validation then used the action TouchID

Here is a complete tutorial from youtube:
https://www.youtube.com/watch?v=UkrI3xZwHLI