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Google Play Books new blue light filter reduces eye strain

Now reading in bed won't keep you up all night.

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Google's usage research indicates that most of us do a majority of our reading between 8 and 10 pm -- you know right before bed. But doing so in a dimly-lit bedroom can wreak havoc on your eyes, not to mention your circadian rhythm. That's why Google's newest update to its Play Books app includes a new feature called Night Light.

It gradually replaces the amount of bright blue light emanating from your screen with warmer, yellow tones that don't reset your internal clock. What's more, the app matches the screen's color and brightness to the time of day to further reduce visual strain. The feature is available on Play Books' most recent versions for both iOS and Android. To activate it, simply tap the Night Light option and the app will take care of the rest.

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