This is interesting, but I have a serious question to ask; Does it work on black people's faces? I can have a hand on my face but it would still predict otherw

This is interesting, but I have a serious question to ask; Does it work on black people's faces? I can have a hand on my face but it would still predict otherwise, it seems like I have to go out of my way to obstruct my face for it to pick it up, and even that with a lot of false negatives.