With a compatible cam, you can now login to windows 10 by facial recognition
Microsoft's Windows Hello offers a few different authentication methods so you can sign into Windows 10 without using a conventional password. You can adopt a PIN, a physical security key, your fingerprint, or facial recognition. The facial recognition option can be handy as all you need do is glance at your computer's camera to authenticate yourself. But, only certain cameras support Windows Hello facial recognition, and you have to set up the feature for it to scan and recognize your face.
On the plus side, if you're able to set up facial recognition, you can use it for more than just signing in to Windows 10. More websites are starting to support Windows Hello authentication, including your Microsoft Account page. Additionally, a few Windows 10 apps support the technology, such as OneDrive and Dropbox. Though the support is still limited at this point, more websites and apps will hopefully hop onboard.