Facebook is expanding a program that encourages users to send in nude pictures of themselves to protect their privacy.
The program first started in Australia but is now coming to the U.S., Canada, and the U.K.
Here's how it works:
Facebook will send users a secure link with which to upload naked photos of themselves.
Then, a few people who work for Facebook will add digital tags to those photos so automatic programs will be able to identify them.
Facebook then deletes the actual photos from their database and scans Facebook and Instagram for photos that match those identity tags.
If the program finds photos that match they're immediately removed.
Because Facebook is using this "digital fingerprinting" system the program will only scan for the specific photos users already uploaded.
That means users who want to scan for their photos will need to upload each individual photo for the program to work effectively.
Facebook said this move will combat revenge porn.