You’re imagining a future where screen resolution doesn’t improve and lenses can’t solve these issues? Are people really this short sighted?

You could easily create a package that couples the authenticated device with a screen showing the faked images and bring that around. If there is a market for inauthentic images that appear authentic, people will easily bypass this technology.

Just take a picture of your manipulated picture/video from the Sony phone. This does not guarantee anything of value.