I need some help in creating Windows 10 Lock screen watermark application. The software will show a graphic on the top left of windows lock screen like this: https://i.stack.imgur.com/RW2RZ.png
The graphic shows in Windows lock screen or sign in screen. It is not in start menu and is not a toast notification.
When we are at windows lock screen, the application will run and show a graphic on the top left. When we log in Windows, the application will be closed.
Source: Windows Questions