Need help with a NEW FEATURE ( or other solution )

Hello
My name is Cristian and I run an DOOH agency. My business model is simple: I have installed 10’’ Android digitial screens inside taxis.
The problem is that some of the customers are complaining sometimes and the driver has to unplug the power source ( not to get a bad review etc. )
I was wondering if we could manage to have a CTA BUTTON somewhere on the screen. When “pressed” the screen should turn off but Xibo would continue to run in the background and run ads. And after a set time ( let’s say 10-15-20 min ) the screen should turn back on.
I tried to find a way around it, but it seems I cannot create an APK to do that.
Or maybe there is another way.

Yhank you in advance for your response

Regards