I have another question.
What if the underaged lies and says they are legal age, and you receive their nude pic? What if they don't LOOK under 18 and their lie is believable?
What about the opposite?... where someone is legal age but they look child like?
How do we differentiate if a person is caught with these questionable photos? Also, is someone a "child pornographer" or trading in child porn if they only have 1 or 2 photos of a specific person, and not a collection?
These are issues that I have never seen addressed legally.