If you want to protect yourself from being tracked, you could disallow websites putting cookie files on your computer. Contrary to popular belief, there are also other techniques for tracking. Every time you request a website, a digital fingerprint of your computer can be created, which can be used to recognize your computer in the future. I was able to proof this assumption in my diploma thesis and detailed field research with more than 20.000 browser fingerprints.
I collected 23,709 digital fingerprints on a project website in November and December of 2012. The website captured information about the used browser, operating system, system colors, installed fonts, plugins, and much more in the background – naturally with prior permission by the user. Afterwards I analyzed the captured data and was able to proof, that about 93 % of all browser fingerprints during that time were unique.
of all users have almost stable fingerprints