A fingerprint can be created based on the following information about your device: What operating system (iOS, Android, Windows, Linux, etc.) is used. What browser and browser version are used. What content (plug-ins, fonts, add-ons) has been installed. The location (determined by device location settings or the IP address). Its time zone settings (which can be adjusted automatically by the network provider).
This is important information for everybody to be aware of. Even if you think something you're doing online is a secret, it isn't, and you need to be careful.