Yeah, unfortunately tap to wake doesn’t work.
You can use the buttons to wake (in the added buttons settings) or set the volume buttons to wake the screen (long press to wake with no change to volume).
Fully Kiosk has motion detection but I’ve not really used it. If you want to use Fully, that would be worth a play.
The way I control all my devices (not in a bedroom though) is via a mmWave presence sensor which also controls lighting. So that’s an obvious way for me to do it. I use the exposed screen on/off control via Fully. My reasoning is that I want the devices always on when someone is in the room as they display the most important data for us in our house. So we can glance at it from a distance without having to wave at it or touch the screen etc. if you’ve not seen, I wrote it up here:
Of course, a bedroom or bedside table setup is different. I’ve developed a dashboard and even implemented an alarm clock system for the TSV. I wanted it always on but find the backlight is still a touch too bright in the darkest of night. I’ve played with several methods to dim the screen and found an app that overlays a dark screen to make it super-dim. Backlight can’t be dimmed any further though. So I’m still experimenting and thinking on this. I will probably end up turning the screen off but then run into the issue you have with not being able to tap to wake. I can do that via pressing the volume buttons but it’s a little awkward, particularly as I run my units in portrait orientation and pressing the volume button needs the device steadying to prevent it falling over.
Still working on that.