OPFS is a browser fingerprinting library for creating persistent, unique and long-lasting digital fingerprints without depending on ever-changing variables such as the user agent string commonly used in other browser fingerprinting libraries. As such, the fingerprint does not change most of the time when a user upgrades their browser to the current version. OPFS uses some novel methods not well known before the publishing of this repo that allow the creation of a likely completely unique device fingerprint in Google Chrome, Microsoft Edge and other Chromium-based browsers. This also applies to Firefox as long as it is not resisting fingerprinting. The library is able to detect and mitigate the effects of browser-based anti-fingerprinting technologies introduced to certain browsers in the past few years with the release of Brave Browser and Safari 13.
Features
- This script cannot detect if certain browser extensions are present in the browser that may be blocking or jamming fingerprinting methods
- The fingerprint should not change between page loads or if the browser is restarted
- The library is able to detect and mitigate the effects of browser-based anti-fingerprinting technologies
- The fingerprint does not change most of the time when a user upgrades their browser to the current version
- The script will not use randomized fingerprints in such browsers and instead settle on a fingerprint that is to be persistent as long as possible at the expense of uniqueness
- OPFS contains many notable fingerprinting methods