The 24-inch LCD monitor uses a built-in CMOS sensor to determine your distance from the screen and your neck angle while sitting.

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"These kind of things are worked through at a safe distance on the screen, so that adolescents and adults can have the illusion of mastering them, " says Dr. Gabbard.

WSJ: Fictional Stars, Real Problems

The laptop's 12.85in (32.64cm) display's resolution is similar to the so-called Retina Display of Apple's MacBook range, aimed to have pixel density high enough for the human eye not to notice pixelation when looking at the screen at a typical viewing distance.

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