Ambient light sensor for automatic backlight adjustment?

[rygD]

This really does need to be implemented in a smartphone, just so I can laugh about it.

Patent the idea, quick.

hasn't this been already implemented ? Afaik my Samsung Note 3 uses the camera for automatic backlight dimming, and it also detects wether you still look at the screen or not and triggers the lockscreen timer accordingly

I was talking about using biometrics for backlight brightness adjustment.  I didn't know it was used for locking the screen, which is pretty cool.

 

[Penguin-Guru]

Averaging all the pixels from camera input should behave similar to a light sensor, more or less. Probably good enough for an initial approximation. Once the camera can lock onto the user's eyes it can fine tune the light level accordingly.

https://www.tobii.com/ ?