We came across a resource that clearly demonstrates the capabilities of your browser in pulling more information about you.
In particular, you can see the battery level, in addition, status in the social network login and internal network address.
We also recommend you check your footprint http://ubercookie.robinlinus.com/
It turns out that a lot of information can be collected: webfootprint is based on background information may be unique.
Another useful resource for testing the browser https://panopticlick.eff.org
One more thing. According to Princeton census website (The Princeton Web Census), which analyzes more than a million websites, there are widespread following technologies:
Now look at the slide below: Visit of two sites only leads to the dissemination of information about you at 84 counterparties — third parties.
More information in the original presentation of scientists from Princeton University.
All this suggests only one thing - identification technology is constantly developing and counteracting them on your own may be tricky.
Of course, there are counter instruments, more secure browsers, special programs which block scripts and more.
If you really want to be protected, along with these methods, it is advisable to use a third, independent and impartial party which is specialized and interested in maintaining your anonymity. In public space such functions are supposed to be done by reputable journalists, information publishers and NGO's that care about their reputation.
In the corporate sector, we have such organizations, like the company Ethicontrol or independent audit firms or independent human rights organizations.