There's also mention of an updated process for submitting your ID photo for account verification. It's decidedly less sophisticated and simply involves snapping a photo of your ID on a flat, well-lit surface and submitting the picture.

We've asked Facebook for comment. Code like this isn't necessarily a guarantee that a feature is coming -- it sometimes represents a test for something that might never see the light of day.

If it does launch in earnest, though, it might draw controversy. While Facebook has been addressing issues, it's still true that the company is still dealing with privacy concerns. A facial recognition-based ID system could reduce the chances of someone compromising your account, but it could also prompt fears (justified or not) that the company might misuse face data or risk a breach that let this data reach hackers.

Facebook is working on Facial Recognition-based Identity Verification, asking users take selfie looking at different directions pic.twitter.com/w4kZHEpDeG — Jane Manchun Wong (@wongmjane) November 5, 2019

Update 11/5 7:37PM ET: Facebook tells Engadget that this is a test, but that it "does not use facial recognition." It's only detecting motion to be sure that you're a living human being and not a bot. Think of it like a next-level CAPTCHA. That still means Facebook is storing face data -- it's just that the data won't be used for facial recognition purposes.