Picture password
Source: https://www.smallbusinesscomputing.com/guides/windows-10-how-to-log-in-without-a-password
If you opt to create a Picture password, after confirming your alphanumeric password you’ll be given the option to choose a picture from among the images stored on your PC. Next you’ll be asked to draw—and then re-draw for confirmation—three distinct gestures on the picture.
These gestures can consist of circles, straight lines, or taps and you can draw them with either a finger or a mouse. However, size, position, and direction of the gestures (as well as the order in which you draw them) are all recorded, and at least in our experience, making precise, repeatable gestures is harder with a mouse than with a finger.
With Picture password, log in by reproducing three gestures on your chosen image.
The upshot is that it might take several tries to get Windows 10 to accept your mouse-based gestures as accurate when you log in later. For optimal results it’s probably best to use Picture password only on systems with touchscreens.
As with the PIN option, if you’re using Picture password and want to fall back to conventional password authentication (or to PIN if you’ve already set that up as well), it’s accessible via the Sign-in options link.