We all know of active 3D and passive 3D, as well as glasses-free 3D (which is basically another type of passive). But say if you don't want to cut the vertical resolution in half, which is the way the standard glasses-free 3D is, how about making an active version of glasses-free 3D, in which the actual TV does the flickering, one image for left eye, and the next for the right? Yes, I know many people hate active so would also hate that idea, but for those who don't want to sacrifice the vertical resolution, could this way possibly work? It would be great for watching glasses-free 3D in full HD, full 4K, full 8K, or possibly even further if such a trick was possible.