https://www.vox.com/future-perfect/2019/9/4/20849307/facebook-facial-recognition-privacy-zuckerberg

You’re being asked to opt in — years after the technology became part of your social media experience.

Facebook is changing how it uses facial recognition technology — the feature on the platform that allows faces to be tagged in photos. From now on, if you want that feature to be part of your social media experience, you’ll have to opt to turn it on. It’ll be off by default for all new users, and for current users who do nothing when they receive an upcoming notice about the change, Facebook announced in a Tuesday blog post.