iLedMapper is an application that turns your iPhone/iPod/iPad in a 4x6/4x7/6x8 or custom size LED panel.
It could be controlled from software/lighting consoles supporting the Art-Net protocol.
Using the Start Channel settings you could use up to 7 iPhones/iPods, 6 iPhones 5 or 3 iPads per universe.
A show using iLedMapper :
http://www.youtube.com/watch?v=1odf46sQEUE