@miclgael @noellemitchell It looks like the technique requires you to use the in-app browser in the Facebook app or TikTok app or whatever to work, rather than using a standalone browser. If you use the Facebook app’s in-app browser, the Facebook app can inject whatever tracking scripts it wants into it.
https://gizmodo.com/tiktok-keylogging-privacy-meta-1849433690
@jalefkowit TBH, Meta deploying their own browser and trying to keep people in there (and convince them its a cool feature) smacks of desperation. 3rd party tracking pixels & cookies have been neutered by a growing number of browsers, so Meta is trying to become the 1st party browser.
Instructions for doing anything on the web should insert a zeroth step: "First, exit the Meta browser and then..." 🙂