This is already a thing. Leica cryptographically signs images. Useful for establishing trust for photojournalists I guess. I’m not sure how deep the chain goes. Do they have hardware attention down to the sensor? You could take a picture of a screen, but that would likely have some other tell-tales. Especially if Leica took another step like putting a depth sensor in the package and added its data to the signature.

So take a photo of a screen showing an AI image.

> It could be applied by cameras themselves.

And equally faked by bots.