touch-event - SvgPanZoom How to move/pan with double finger touch

Question

I'm using SVG-PAN-ZOOM library to handle a map in a webpage. It works very well for desktop.

For mobile devices I have followed this demo: https://bumbu.me/svg-pan-zoom/demo/mobile.html

But I have some troule, when the use try to scroll the page, the svg moves (pan).

Then I tought it whould be great to enable the pan with the double finger touch like the google maps does.

Is it possibile?