Login with Finger Press
Microsoft has added a feature called Windows Hello to Windows 10: it lets you log in using facial recognition, a fingerprint or an iris scan. (If your computer has the necessary hardware attached)
To change the way you gain access to your PC, go to the Settings app, then follow the Accounts link and choose Sign-in options from the menu on the left.
The options listed will vary depending on the hardware you have attached to your PC, but new computers made specifically for Windows 10 should include at least some of the new options.