How to make a scene display over the lock screen in Unity?

Question

C++ / C#

I need my application to be on top of the lock screen when I turn on the phone.
How to implement it?
There are some more details, but I think that I will do it myself:
- There is an exit button that displays on the lock screen
- When you turn it off / on again, the application is displayed, that is, the application does not close on the exit button

Answer 1

There is no such functionality in Unity by default. It is worth looking at how widgets are made in Kotlin / Java or Swift (for iOS) and writing such a widget to launch your application, and only then launch the game from it.