There's a website that can tell you if a picture has nudity

Trying to figure out if the photo your dad emailed you is a porpoise or a nude selfie? Isitnude, the purpose of which ought to be self-explanatory, comes from Algorithmia, a coding company that built it for a client needing a child-friendly site. Algorithmia's CTO, Kenny Daniel, told Wired's Brian Barrett that, as with many goofy online undertakings, it filled a real need that wasn't covered by common sense. "A customer came to us trying to run a site that needs to be kid-friendly," he said. "We'd done quite a bit of work on image recognition. One of our engineers took some algorithms off the shelf, things like image detection, skin color detection, and then put them together."