JS tracker should not track anything when the protocol is file:// to avoid tracking personal data by accident #17017

Use case:

Someone downloads a page from your website and stores it locally. Then the user opens it and the user will be tracked and the URL might look like

file:///C:/Users/myname/AppData/Local/...

This way we actually track personal data potentially by accident without knowing.

I'm assuming we could always exclude this protocol or should we have a way to opt in or opt out of this? Would this be a BC break?

see https://developer.matomo.org/guides/jstracker-core this would need to be changed in js/piwik.js see how to embed tracking code https://developer.matomo.org/guides/tracking-javascript-guide