touch position is not on the fingertip.

[luqiang.han]

Hello, I want to track the and and interactive with web engine in VR.

So I tried the example of "virtualHands.py"

However, the touch position is not on the fingertip, there is a blue point 20mm away from the fingertip, and the touch position is on the blue point.

Is that possible to control the distance between the blue point and the fingertip? So that I could only click the button when I really touch it.