[grumbel]

That's something C2PA[1] might be able to help with, i.e. your phones camera puts a digital signature on the photo confirming that your phone took it. If that doesn't work out due to people photographing an AI image of a display, I would expect custom shop apps to be required to make warranty claims, as they could make use of all the phones sensors and make forging much harder.

Either way, I am not sure how big of a problem this is to begin with, since you'd leave quite the paper trail either way. It's not a stunt you can pull off repeatedly without getting caught.

[1] https://c2pa.org/

[mensetmanusman]

Good idea. It’s a type of image that doesn't need to be modified, so an encoding verification scheme would work.

[mschuster91]

C2PA only holds up until someone can extract the key material from any cheap-ass sensor.