 to make the best impression in your matchmaking quest. Tinder's own study showed half of its users had trouble picking a profile photo, so they trained an AI not just to recognize your face, but which of your existing photos makes a good profile image. The AI is also trained, according to the company, to ignore questionable photos, things that would violate Tinder's terms of service and photo guidelines, and that would include nudes. We just used to tell people, say cheese.