Phone as a Pixel is a scalable, synchronization-free, platform-independent system for creating large, ad-hoc displays from a collection of smaller devices. In contrast to most tiled-display systems, the only requirement for participation is for devices to have an internet connection and a web browser. Thus, most smartphones, tablets, laptops and similar devices can be used.
Phone as a Pixel uses a color-transition encoding scheme to identify and locate displays. This approach has several advantages: devices can be arbitrarily arranged, can join and leave at any time, and infrastructure consists of a single conventional camera. Further, additional devices can join at any time without recalibration.
This work was a collaboration with David Klionsky. A similar project called PixelPhones was done concurrently by Seb Lee-Delisle, whose impressive system has been demonstrated to work on thousands of displays.