When playing on my games when trying to go back a lock shows on screen

[Android Central Question]

How do I get the lock to shut off on my games. When I try to go back a picture of a lock comes up..

 

[L0n3N1nja]

You've providing almost no information which makes it difficult to provide a specific answer, however it sounds like you may have a Samsung with game tools.

Tap the floating icon that appears when you launch a game, there is a toggle for the back and recent button to disable them as shown in my screen shot.