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Google's plan to restrict sideloading on Android has a potential escape hatch for users
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
So a lot of speculation and we don't know much except 2 paragraphs in the FAQ... I'd like to mention though, they've recently stripped the Pixel devices of their status as developer devices and now push for their emulator for development. Once they follow that kind of logic, there isn't really a reason to keep ADB working as is, at least not on real devices.