Seeing 3D movies in theaters isn’t my preferred choice for a bunch of reasons, but the glasses definitely rank among its most annoying features. The cheap plastic things always have to ride atop my existing, actual vision glasses, for one, and they also always seem to be scratched or otherwise marked up. Which is why news that MIT has developed a glasses-less 3D display tech suitable for use in movie theater settings – even if it’s only a prototype – is so welcome.