Firefox now supports a setting (in Preferences → Privacy & Security) to enable Global Privacy Control. With this opt-in feature, Firefox informs the websites that the user doesn’t want their data to be shared or sold.
This sounds like Do Not Track revisited. The only difference that I can find (only skimmed the website) is, that there seems to be some legal support for this in the state of California.
Now you can exercise your legal privacy rights in one step via Global Privacy Control (GPC), required under the California Consumer Protection Act (CCPA).
I wonder:
How does this differ from DNT?
Does this this have any real chance to take off? From what I’ve heard, DNT has been rather counterproductive as it can be used to fingerprint users.