Both Apple and Google are doing great work to prevent multi-site tracking. Google Chrome is slowly phasing out cookies, and Apple goes the furthest by asking users to block multi-app/multi-site tracking using their app transparency popups.
Custom in-app browsers are out of their reach, though. Such browsers are annoying by default, as they won’t have the history, usernames, passwords, or sharing options from your default browsers. But while they are most commonly found in apps like Facebook and Instagram, they aren’t limited to the big two Meta apps.
Because the app developers themselves code in-app browsers, they have a lot more freedom as to what goes on in there. A recent study by Fastlane developer Felix Krause showed that Facebook and Instagram can basically track anything they want when you’re using their in-app browser, which they use to open all ads and links by default.
How does in-app browser tracking work?
Technically, an in-app browser can even record personal information like passwords and credit card information as you’re entering it in the text field, but the study doesn’t show that Meta is doing anything that nefarious. It’s important to note, though, that a random app with its own built-in web browser does have the ability.
What can you do about in-app browser tracking?
First, whenever you open a link in Instagram, Facebook, or any other app with an in-app browser, get the hell out of there. The app has already recorded that you opened the link and there isn’t a lot that you can do about that, but you can stop the tracking there. Instagram has an option to open the website in the default browser, hidden behind the Menu button.