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Comment by sametmax | Hacker News Reader

Yes, best feature ever. I've been giving it a try for some time now since it came out in test pilot and it's beautiful.

Open your google/twitter/whatever accounts in separate profiles, et you get the benefits of being "always logged in" with no tracking on your main session.

Having multiple github accounts next to each others is a bliss and prevent so many stupid mistakes I used to make, like commenting with the wrong identity on a PR.

Combined with the tab group extension, it makes currently Firefox the most productive browser experience I had in years.

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> you get the benefits of being "always logged in" with no tracking on your main session

_well_ what about web sites that use information about your browser that isn't stored in cookies? Check out https://panopticlick.eff.org/

Unless Firefox has a story to prevent this kind of tracking, don't rely on multiple profiles for any important separation you're trying to keep.

If you enable 'privacy.resistFingerprinting' in your about:config, you get substantially harder to track. The caveat is that there's a small (albeit noticeable) performance delta.

That attribute is part of ongoing work and it's disabled for a reason. Currently it doesn't protect you against canvas or webgl fingerprinting.

I think you can turn webgl off or disable extensions and use the addon CanvasBlocker for that until the Tor Uplift project gets completed.

They do have tracking protection (basically a content blocker) but by default it's only enabled in private mode.

What should you rely on?

EFF's Privacy Badger extension [0] should help a little, but if you really need to avoid tracking you'll need something more like Tor.

[0]https://www.eff.org/privacybadger

Torbrowser actually warns to not resize your browser as the resize allows people to fingerprint you

good question, I don't personally have such needs so I haven't investigated it.

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