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The Oyster team has added a new in-app reading feature called Lumin. It regulates the device’s lighting according to the amount of natural sunlight that the user is experiencing (taking into account both the location and time of day).
Readers will find that as the sun goes down, Lumin will reduce the blue light beaming out from the mobile and tablet screens. In its place, a warmer, softer amber light will be emitted.
Here’s more from the website: “Studies show that nighttime reading on devices that emit blue light can suppress our bodies’ production of melatonin, keeping us awake and making us less alert the next morning. Lumin reduces the blue light coming from your screen as the day turns into night.”