Application "Lock Screen Widget" is a simple widget (1x1) that allows user to easily lock screen.
Before uninstalling the widget make sure to disable admin permissions in Settings -> Security -> Device administrators -> Lock Screen Widget.
How to add widget "Lock Screen Widget" onto your phone's screen:
1. Go to your Home Screen.
2. Long click on empty space on Home Screen.
3. Select "Widgets" from the list.
4. Find widget "Lock Screen Widget".
You have an idea on how to improve "Lock Screen Widget", add a comment below.