This is old: nowadays, to create revenge porn, someone can just grab your face photos and use deepfakes.<p>i.e. facebook doesn't need naked photos to stop revenge porn, just use photos of your face, which they already have<p>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 <i>other</i> peoples' naked pics to you. To thwart uploading previously-recorded photos/video, use the same tech as Face ID.<p>This would also be an excellent positive-PR partnership opportunity between Facebook, Google, Tinder, and the other top social media and dating sites.