YubiKey for Windows Hello

As a Windows Hello feature, it unlocks your computer when you put in your Yubikey. It does not however provide for multifactor authentication. It would be nice to see the option for a Yubikey + Password/Pin. Would be really interesting to see if we can combine Yubikey + facial recognition (for supported cameras). I gave it 3 stars to allow for room to improve. If all you want is to have your Yubikey unlock your computer, then consider it a 5 star. This uses CCID protocol, and as a result, only the Yubikey 4 and Yubikey Neo are supported. Older Yubikey do not have CCID support.

Works perfectly with Windows. Here's how the login process changes when you enable Windows Hello and set up this app (with the YubiKey unplugged at the login screen): instead of immediately displaying the password box when you enter the login screen, it instead displays a button labeled "Sign-In options". When clicked, this turns into three login options - companion device (does nothing when clicked), password (opens up the password prompt), and PIN (opens up a prompt for the PIN you set when configuring Windows Hello). You can still log in via your old password or the PIN you set. However with the YubiKey, all it takes it inserting it into a USB port - and your screen is unlocked instantly, no further user input needed! If your screen is locked while the YubiKey is still inserted, when you go to the login screen, your computer will immediately unlock itself without any further actions on your part (do NOT need to click the button).

Lock computer when removed Require PIN or Fingerprint.