Why and How Does Facebook Use Face Recognition?

According to Facebook’s help site, there are two ways Facebook uses its facial recognition technology:

To find photos and videos you’re in so Facebook can help you review or share content, suggest tags, and provide relevant content and feature recommendations.To protect you and others from impersonation and identity misuse and improve platform reliability.

Currently, photo tagging appears to be the only thing that Facebook uses its facial recognition technology for, but this may change in the future as other uses are discovered. Testing done by some reviewers has found the technology to be ​less than accurate. In Europe, Facebook was required to delete European users’ facial recognition data due to privacy concerns. The best advice for dealing with any Facebook privacy concerns you may have is to check your privacy settings at least once a month to see if there is something that you were opted-in to that you would rather opt-out of.