Firefox

As part of its Enhanced Tracking Protection feature, Mozilla is planning on blocking Fingerprinters by default in Firefox 72, which is slated to be released in January 2020.

Fingerprinters are a tracking method that allows a company to track you based on characteristics of your computer rather than through tracking cookies.

It does this by building a profile of your device based on its characteristics such as the screen resolution, the browser you use, timezone, language, installed extensions, the installed fonts, and your operating system.