[lnrd]

So all I would have to do to make a "legitimate" fake picture is to generate it, print it, take a signed picture of the print with a camera and then upload it on the web?

With the right setup I could probably just take a picture of the screen directly, making it even easier (and enabling it for videos too).

[keiferski]

Presumably the camera would have to incorporate GPS or other systems to ensure that you aren’t just taking a photo of a screen.

But yes that does add a wrinkle.