This asset is simple and good-enough scripting library for touch gesture recognition.
Simply retrieve touch gesture result using this library like as:

    var zoom = TouchRecognizer.PinchLength;

In almost case, You have to need to write C# script to totally control the feel of your app anyway. Script library is good choice if you familier with scripting.

Bother things like tracking finger IDs on multi-touch, or any others are managed and recognized by Touch Gesture Recognizer.