Looking for Callback Context on a player input object

Me and friend are trying to figure out how to get a callback context from a Game Object using a Player Input component to get the device of the button that has been pressed, if it's possible?

Basically I'm trying to get some multiplayer functionality going. When I press a face button, I need to get which controller pressed said button and return the device. This is what we tried so far:

Code (CSharp):

1.     void MyButtonPress(InputAction.CallbackContext ctx)
2.     {
3.         InputDevice device = ctx.control.device;
4.         Debug.Log(device);      
5.     }

This is what my friend came up with, but I wanted to do this within the method called by the Player Input (MyButtonPress, in the example above)

Code (CSharp):

1.     void Awake()
2.     {
3.         ctrl.Ctrl.Act.performed += ctx => onButtonPress(ctx);
4.     }
5.  
6.     void onButtonPress(InputAction.CallbackContext ctx)
7.     {
8.         InputDevice device = ctx.control.device;
9.         Debug.Log(device);
10.     }

 

I am having the same issue. I want to be able to get the specific PlayerInput that called the action.