Imagine every time you go online, your browser accidentally leaves a unique combination of clues, like your exact timezone, installed fonts, and even how your hardware renders graphics. Websites stitch these clues together to create a profile, or a "fingerprint," that can follow you. Specialized software exists to combat this. So, if you're asking what exactly a fingerprint browser is and how it works, a very clear and technical explanation can be found here
https://gologin.com/blog/what-is-browser-fingerprinting/ . It breaks down the science behind the tracking and the protection.