The way Windows does lock screens has changed dramatically. Microsoft's approach has shifted toward something you would see on a mobile device rather than on a desktop computer.
To get to your lock screen you want to head to "Settings" and choose "Sign-in Options." Under this category there exists three different ways to change how you log into your machine.
Setting up a PIN
Let's set up our PIN first.
Under "Sign-in Options" click on the "Add" button under PIN. The next screen will ask you to "Verify your Account" by inputting your Windows Login password. Once inputted correctly, you will be able to input your PIN.
Input your PIN once in each box, and hit "Continue."
That's it. Now, if you log off your computer or want to use an app, you can just use your PIN to gain access.
Picture lock screen
Before we begin, make sure you have whatever image you are going to use downloaded onto your computer.
When you click "Add a Lock Picture," you will have to input your Windows password.
Click on "Choose a New Picture" and browse to the folder where the image is stored.
Once the picture is set up you must activate your gestures. You can either set a click-and-drag gesture or you can click a spot on the photo. I recommend you choose something that is easy to remember but not easy to guess.
The next, and last step, is to confirm your gestures. Voila! You now can log into Windows 10 by using gestures on your lock screen.