Windows Phone (8&7.5) and Windows 8 introduced the concept of a lock screen, in fact, the Windows Phone 7.5 application developers know that the 7.5 era of mobile phone lock screen is not supported by Third-party developers. So now our third party developers can develop information about their applications in the Windows 8 and Windows Phone 8 lock screen interface.
The Windows 8 lock screen has three uses:
Prevent accidental login attempts on the touch device;
To provide users with a personalized interface;
Display streamlined information to the User: date and time, network status and battery status, notifications from a limited application;
A, lock screen reminder overview
The Windows 8 lock screen displays up to 7 applications at a time. All 7 applications can display a lock-screen reminder and Toast, but only one application that displays its latest tile notification is allowed.
We can add the application that you want to display on the lock screen in the computer settings.
More details on the lock screen can be consulted: a lock screen overview (Windows Store application) (Windows).