Testing suggests that not even identical twins can dupe Windows Hello

Windows Hello, the feature in Windows 10 that lets you use your face as
your login password, so to speak, may seem like a mere novelty at first
glance, and something that could potentially be readily fooled. Journalist
Chris Griffin with The Australian wanted to find out for himself , so he
brought in six pairs of identical twins to put Windows Hello to the test.
The result? In each of the six cases, Windows Hello kept each twin from
logging in as their identical siblings.
To run the test, Griffin used a webcam-equipped Lenovo ThinkPad
notebook, and had one twin from each pair set up a login account and
configure Windows Hello to recognize their face. He would then have the
other twin attempt to log into the first twin’s account. Windows Hello
successfully kept the imposter twin out in each case, even if the second
twin wore their hair like the first twin or removed their glasses.
Windows Hello wasn’t without problems in The Australian’s experiment. In
some cases, it wouldn’t recognize faces right away, and in one case, it
wouldn’t work at all, so if you give Windows Hello a go, you may run into
similar difficulties. Still, it’s reassuring to see that Windows Hello can keep
impostors out, even if it doesn’t always pick up faces.