[asah]

This is old: nowadays, to create revenge porn, someone can just grab your face photos and use deepfakes.

i.e. facebook doesn't need naked photos to stop revenge porn, just use photos of your face, which they already have

i.e. photo of your face appears on fb/instagram/etc in an unlikely place? auto-crop it to just that body and ask you if you approve. even better, offer a page listing "your photos that appear on other people's feeds and profiles". The algorithm would need to be conservative (i.e. err on the side of not-matching) to avoid leaking other peoples' naked pics to you. To thwart uploading previously-recorded photos/video, use the same tech as Face ID.

This would also be an excellent positive-PR partnership opportunity between Facebook, Google, Tinder, and the other top social media and dating sites.