Startup Idea: BuzzKill App for Samsung Device Button Control

Startup idea to develop an application that provides control over the hardware buttons of Samsung devices, allowing users to disable and re-enable them at will to prevent accidental button presses.

I have an idea for an App. As far as I know, there is no App to solve the problem. It should be simple enough, as there is a solution on the web of all the steps required to solve the problem, but it's insanely hard to a layman. Not to mention that it doesn't explain how to turn them back on. The problem relates to the hard buttons on the side of my Samsung Galaxy S6, and presumably several other Samsung models. These buttons all have functions that change what you're doing. I want an App to turn them all off and back on when I want. For instance, when I'm at the dinner table with a picture I want to show Aunt Mary, I hand her the phone to see it, only to hear her say "OOPs, what happened?", when she accidentally pushes one of the buttons while trying to hold the phone. If I can turn all the buttons off with the push of a button before I hand it to her, problem solved. Yes, I would pay for this App. Call it BuzzKill.