Can I wake up the screen by tapping it?

When the device screen is completely off you usually can’t wake up the device as the switched off display can’t recognize any taps. You can use display dimming instead of screen off by setting the Screensaver Timer to the delay in seconds and Screensaver Brightness to 0. Also keep the Screensaver Wallpaper URL at fully://color#000000 for the maximum darkness. The real dimming level is depending on the device. You can then wake up by tapping the screen.

If you need to use the Screen Off Timer feature consider using different Motion Detection, Device Movement Detection or REST API alternatives for waking up the device.

Many new devices can be woken up by tap or double tap. Check the Android Settings for this option.