Windows 8 lets you customize the look and feel of the Lock Screen. You can change the image to one included in the system or one of your own and add additional apps.
From the Windows 8 Start screen pull up the Charms bar and select Settings, then Change PC Settings.
The PC Settings screen opens. Select Personalize on the left and Lock Screen in the right pane. There you can change the background image to one of Microsoft’s designs.
Or, click the Browse button to use a photo from your collection.
You’ll get a preview of how the picture you choose will look.
Scroll down a bit further and you’re able to select which apps you want to show data on the Lock Screen. You can choose from Mail, Weather, Calendar and info from certain third party apps you’ve install from the Windows Store.
Then on the next line you can select which app displays detailed data on the Lock Screen.