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Editing Step 25 —

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Let's just remove the camera bar. Oh wait.

There are several cables leading into the side of the display assembly. Our bet is that these control the parallax barrier, used to generate that awesome glasses-less 3D effect.

What's a parallax barrier? Imagine placing a very small picket fence in front of your screen, so that when you look at the display, each eye sees different pixels while they peer around the fence boards.

Then, with a combination of the magic of geometry, and the new face-tracking "super-stable 3D", the 3DS knows which pixels each eye can see, and draws two overlapping versions of the same scene—one for each eye. The combination of these two versions gets slapped together in your thinkpan as a sweet, sweet stereoscopic 3D image.

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