Photo ID is unreliable at best, (and not legally binding) even if the animal is still alive.
Once the snake dies and starts to deteriorate, photo ID is pretty much irrelevant.
Even a snake that's been necropsied, or frozen can be verified with a simple chip reader.
And...
I won't even consider buying an adult het based on a hatchling photo ID, unless I personally know the breeder.
Plus...
It's a foolproof way track hets even when "helpers"/employees mix up snakes.