Support Mozilla Firefox browser
Very popular browser, I'm surprised that this script doesn't work whatsoever when you try to use Firefox
Unfortunately, this is not that high on the priority list at the moment. The reason is that the browser limitation is only for the webmaster viewing the data, not for the visitors. userTrack might work perfectly in Firefox but currently I do not list it as supported as it has not been fully tested in other browsers except Chrome.
I am currently doing a big codebase re-write and, while doing so, I will also try to make sure that Firefox is also supported.
Thanks for your feedback!