You’d need a pretty high resolution source image plotted for that to work well, modern digital cameras have 20+ megapixels, and if you take a picture of a low resolution image it’ll be very obvious. I’m sure it’s possible, but definitely not that easy to do.
Wouldn’t this suffer from the same ‘analog hole’ as DRM? i.e. just take a photo of whatever image you want to be verified?
You’d need a pretty high resolution source image plotted for that to work well, modern digital cameras have 20+ megapixels, and if you take a picture of a low resolution image it’ll be very obvious. I’m sure it’s possible, but definitely not that easy to do.