In a new move to prevent you ex trying to get revenge on you, they are asking you to submit photos but not just any photos, they want NUDES!!
Now you're probably thinking ummmm, why do they want these specific photos? The plan is for you to submit them so they aren't used for revenge porn by your angry ex! There is actually already a system in place for situations like this, but the plan for this program is to stop the ex from posting them in the first place.
Here's how this will all work, people share their photos with Facebook through the messenger app and then Facebook will "hash" the photo, which means they put a digital code on that photo that is only for that photo. After they have that code, it will block the image from ever seeing Facebook.