"By recognizing your Facebook friends in the photos you take (just like when tagging or sharing photos on Facebook), Messenger can create a group thread for you to share the photos with those friends in just two taps."
https://newsroom.fb.com/news/2015/12/messenger-adds-new-feat...
http://www.theverge.com/2015/11/9/9696760/facebook-messenger...
You can opt-out by turning off tagging suggestions: https://www.facebook.com/settings?tab=timeline§ion=sugge...
Edit: I don't give any of my friends consent to use that feature - yet the would still scan my face. How can this even be legal.
Lobby your congressperson to fix it.
IMO this is something that should be regulated.
Congress cannot afford the lawyers needed to write that kind of legislation. The lobbyists write the laws they advocate for.
In my state legislature, which I follow, it's really common for various groups to write sample legislation. Everything from duck habitat preservation to open source software.
What another trove of data for FB. Disgusting.
They could not use facial recognition in the first place.
I said open-source.
Try getting pictures of other people and see if Facebook suggests them to be added as your friends.
That's a whole new level of stalking people right there.
The worst thing is you can't "boycott" the app because even if you don't use it but your friends do, the pictures of you WILL be analyzed. Even if you explicitly refused their ToS...
I was spending time with friends, and I took a few pictures of all of us (didn't send them through either FB or Messenger). A few hours later, messenger popped up a notification telling me something along the lines of "Hey, I see you took pictures today of <friend>. Want to send them to her?"
Made me feel incredibly creeped out that FB would take my photos and (presumably upload and) analyze them even when I hadn't given them to FB.