Taking a screenshot on my tablet requires pressing 2 buttons simultaneously. If they’re not pressed together you either
a) turn the device off or
b) turn the volume up.
Taking a screenshot on my phone requires pulling down a menu and selecting an icon. If you don’t catch the menu right it opens an alternative, different menu that can’t take a screenshot.
Taking a screenshot on my laptop requires pressing 1 button.
Choosing to make something mobile might mean it’s less accessible. Don’t overcompromise.