First things first, this is not news. Apple has been very up front about the Face ID edge cases.

That said, I did find this interesting, was wondering how long it would take before someone verified this theory.

From the linked Mashable article:

With both sets of twins, the other twin unlocked the iPhone X, even though neither one had registered his face with Face ID on the iPhone X. With the Franklin twins, we had both brothers remove their glasses and had the other brother register. Again, Face ID failed to tell the difference.

Look, Apple never claimed Face ID was perfect and, in my tests, it could not be fooled by photos or videos of my registered face.

But also interesting is the claim that Windows 10’s facial recognition tech was able to distinguish between twins.

Not much of an issue. Unless you are a twin. Especially an evil twin.

UPDATE: I’m told that the Windows facial recognition tech is iris scanning, not true facial recognition. Requires facing the camera with head aligned, just so. Does pick up the difference between twins, but clearly loses in convenience to Face ID.