Apparently the challenge says: “Please upload a photo of yourself that clearly shows your face. We’ll check it and then permanently delete it from our servers.” But don't worry, it won't be deleted from the NSA's servers..... Also noted that Facebook looks at whether the photo is unique. So don't try feeding it that stock photo of Abe Lincoln. What is the name for that warm feeling that comes from not having a FB account?
"Boffins craft perfect 'head generator' to beat facial recognition Researchers from the Max Planck Institute for Informatics have defeated facial recognition on big social media platforms – by removing faces from photos and replacing them with automatically-painted replicas. As the team of six researchers explained in their arXiv paper this month, people who want to stay private often blur their photos, not knowing that this is “surprisingly ineffective against state-of-the-art person recognisers.”... The researchers went a step further by constructing a realistic “fake face” that replaced the original image, but was perturbed enough to beat the AI while still looking “right” to a friend perusing the image..." https://www.theregister.co.uk/2017/...head_generator_to_beat_ai_facial_recognition/