Originally Posted by
njkayaker
In daylight, you shouldn't need the backlight at all. That's one of the points of e-ink.
It appears that you have missed my point. When you illuminate things with a blue light
at night, your circadian rhythm is thrown off, possibly causing difficulty trying to sleep because your unconscious thinks that you have just seen sunlight. For this reason, I have a utility on my laptop called f.Lux, that takes blue out of the light spectrum of the display from sundown to sunrise.
Or were you implying that no-one contextually interested in this device would be using it at night? I would use it as my only cellphone, thus using it at night too.