Is There a Way to Authenticate a Fake Detector?

I don't think we'll ever be able to look at the pixels of a photo and tell you for sure that it's real or not real. I also think we will likely get better authentication systems where you know, imagine that every phone cryptographically signs everything that comes out of it. You could imagine maybe you make phones that have the private keys hardware embedded in them. It would make it harder for an adversary with fewer resources to fake things.