I don’t think we’ve discovered anything particularly niche that isn’t public knowledge today. Since Fable-line of LLMs dropped deobfuscating and reverse engineering web and phone apps is very approachable. Github is full of resources and you can start with something like cloakbrowser

None of fingerprint tech is illegal in any way so it’s a free for all and every browser except Brave (which yeah I know sucks) does basically nothing to fix this.