For everyone wondering: Firefox extension Chameleon randomly spoofs your user agent. However, I would highly recommend NOT using this extension, or randomizing your user agent whatsoever - it only raises your entropy and makes you easier to track. You should be trying to make your browser look identical to everyone else's, not different.
This can by partially achieved by setting privacy.resistFingerprinting to true in Firefox's about:config. This won't stop Panopticlick from fingerprinting you. If you really want to reduce your fingerprint, try using the ghacks user.js [1]. If you want to make fingerprinting completely impossible, use the TOR browser [2].
Most users don't need to worry about this - uBlock origin blacklists most fingerprinting efforts by default.
You're assuming that trackers account for a changing UA. Are there trackers doing that? I suppose a deliberate or malicious attempt to identify me and isolate my machine could account for a randomly spoofed UA. But if I am trying to hide in plain sight from tracking software, isn't this method of UA spoofing enough to misplace my machine into different tracking categories or throw them off my scent entirely? When I run Panopticlick, UA is usually among the highest number of bits of identifying information, the rest of the identifying settings and preferences are more likely to be shared, which makes a particular device blend in.
This can by partially achieved by setting privacy.resistFingerprinting to true in Firefox's about:config. This won't stop Panopticlick from fingerprinting you. If you really want to reduce your fingerprint, try using the ghacks user.js [1]. If you want to make fingerprinting completely impossible, use the TOR browser [2].
Most users don't need to worry about this - uBlock origin blacklists most fingerprinting efforts by default.
Please read: https://www.privacytools.io/browsers/#fingerprint
[1] https://github.com/ghacksuserjs/ghacks-user.js [2] https://www.torproject.org/
More Firefox privacy extensions: https://github.com/ghacksuserjs/ghacks-user.js/wiki/4.1-Exte...