We need a native android app, that records in 2 count variables how many pixels are covered by each finger (max 2 one left half and one right half of screen) that are touching the screen, It must be able to detect if the user lifts their finger slightly without moving it ie reducing the count for that finger. Like a sort of 'touch pressure indicator'.
The app has no UI etc, it's only intended to be used as a plugin to Unity3d, and only needs methods to calculate the above and retrieve the 2 count variables.
Included in the above, we would need the steps described in this post https://www.thepolyglotdeveloper.com/2014/06/creating-an-android-java-plugin-for-unity3d/ up to the point in which the integration takes place in unity
Best
Chris
as above