The naked pixel is a pretty LCD panel, but it's actually doing quite a bit more... The maker writes -

The Naked Pixel challenges our notion of decency in public arenas by using the entire visual display to represent individual pixels of a nude photograph sequentially over time. By viewing the piece, the audience is not only unaware of what they are viewing, but their primary visual cortex can not mentally construct the sequence of colors into a coherent image.

Using a light sensor, the piece detects nightfall and further "undresses" each pixel's color into its binary value by displaying a sequence of ones and zeroes. This further obfuscates the representation of the potentially "obscene" image.

My intention is to convert a still image into an animated sequence of pixels. This changes our perception of the image by limiting the stream of optical information from a parallel format (all pixels at once) to a serial format (each pixel individually). Our visual system is incapable of parsing this visual information, which fundamentally changes the character of the image. Our experience of the still image becomes entirely new, even though the content of the image remains.