Windows Hello is a more personal, more secure way to get instant access to your Windows 10 devices using fingerprint or facial recognition. Surface Pro 4, Surface Book, and most PCs with fingerprint readers already work with Windows Hello. You can also sign in to your PC using Windows Hello companion devices, such as Microsoft Band and Windows phones. Here's how to set it up:
Go to the Start menu and select Settings .
Go to Accounts > Sign-in options.
Under Windows Hello, select Set up. Device not compatible? See devices that work with Windows Hello.