"Kiosk" mode with OF

Thanks for your answers...

Fresla : I've tested some of them, found only one that seems to work on a Kindle 5 but it is restricted of some kind of web browsing only (and I want to restrict it to an app), and the license cost is 50$ per device

Tallavi : I tried to follow the guide you provided - I'm not very comfortable with Java development - I added the required new Java classes from the guide but at some point it seems that the default OfApp behaviour needs to be modified which is far beyond my skills

The guide's author declare its app class like this

public class AppContext extends Application {

	private AppContext instance;
	private PowerManager.WakeLock wakeLock;
	private OnScreenOffReceiver onScreenOffReceiver;

	@Override
	public void onCreate() {
		super.onCreate();
		instance = this;
		registerKioskModeScreenOffReceiver();
		startKioskService();
	}

	private void startKioskService() { // ... and this method
		startService(new Intent(this, KioskService.class));
	}

	private void registerKioskModeScreenOffReceiver() {
		// register screen off receiver
		final IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
		onScreenOffReceiver = new OnScreenOffReceiver();
		registerReceiver(onScreenOffReceiver, filter);
	}

	public PowerManager.WakeLock getWakeLock() {
		if (wakeLock == null) {
			// lazy loading: first call, create wakeLock via PowerManager.
			PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
			wakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK
					| PowerManager.ACQUIRE_CAUSES_WAKEUP, "wakeup");
		}
		return wakeLock;
	}

}

I really wonder how this code can be plugged in OF android...