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I think the 3D star is fading. I have a Nintendo 3DS, and while I still think the 3D effect is neat, I leave it off much of the time. With glasses free 3D, you have to keep the device really steady or you lose the 3D effect and get ghosting. I assume this would be true with any glasses free device, since it requires the simultaneous display of two slightly different images. Another drawback for portable 3D devices is the significant impact on battery life. After all, you have two displays to power instead of one. With long battery life being one of the things nearly everyone desires in their tablet/phone, I'm not so sure there is a large market of people willing to sacrifice battery life for 3D effect. Maybe Amazon has figured out something new though. We shall see.