I have a customer looking to lock down the Android MC18 and completly hide the Navigation bar. The app has immersive mode enabled - but kids have found a way to swipe the screen and show the nav bar - then close the app. The customer has tried kiosk mode but this only relaunches the app after it has closed, at which point the customer has lost their shop.
The status bar has been hidden but the customer cannot find a way to hide Nav
Is there a way they can do this and have a secret button to prgramatically show the Nav bar for support use?