There is one last flaw that I would like to work out. The chromium instance allows the user to use gestures and go back and forth in the history of pages. In some cases get to a restricted page this way.
I googled vigorously to solve this issue, but so far to no avail. Any advice on this topic?
I wasn't successful in finding any suitable solution as well. Have a look at xinput command which might help you to disable all the gestures at Linux level. I didn't tried it myself however if you find any working solution our team and the community will be happy to hear about it.