SauRoNZA
Honorary Master
That’s what I meant I use mine in bed all the time.It doesn’t need light, but try having your face against a pillow or half under a duvet?
As for the last bit, you don’t need to be directly in front of it, but you need to be within its field of view. I can (and often do) use my phone flat on my desk while multitasking. Approximately 45 degree angle. I can see it, it can’t see me.
The desk factor makes more sense if you operate like that. I simply can’t use a device on a flat surface like that.