[bentruyman]

There are certain browser APIs disabled in the browser in incognito mode that can be detected. How else would you implement incognito mode?

[brohee]

By sandboxing, e.g. localStorage fully functional but deleted at the end of the session...

[2fifty3]

Mozilla recently released containerized tabs[0], I imagine the next logic step is building containerized Private Browsing Mode

[0]: https://addons.mozilla.org/en-US/firefox/addon/multi-account...

[Paul-ish]

My understanding is that things actually went the other way. Private browsing came first, then the same approach was used to create more labels than just "private" and not "private". I think more features may be turned off in private browsing mode though.

[m-p-3]

I use multiple computers daily and not having those synced with my Firefox account is a pain in the ass.

[Analemma_]

That's interesting. Why are the storage APIs disabled, instead of just using ephemeral storage that goes away when the window is cleared?

[lallysingh]

It's less work to disable them. There's likely already an API access control system in place, for internal-only APIs, testing, etc.

[eridius]

It also means sites can avoid promising to do things that aren't actually possible, like saving information for access next time.