A device that detects the amount of light in the vicinity. An ambient light sensor may be built into a smartphone or tablet to adjust the screen brightness based on the available light.

DarkModeBuddy runs in the background monitoring the ambient light readings from the same sensor that automatically adjusts your screen’s brightness. When the ambient light drops below a threshold you ...

This could be how Philips Hue will bring ambient sensing to its ... But the idea of, say, every Philips Hue light bulb in your home turning into a motion sensor overnight, making it simple to ...