Since Baltimore’s own Dan Deacon and Keith Lea released an app that turns an audience’s smartphones into a kind of crowd-sourced light show, confirmations of the app’s technological novelty (it requires neither wireless nor cell service to sync all the phones in a venue) and stunning visual effect have been slowly accumulating. 

Below is a video of the Dan Deacon app being repurposed to provide the light show for a Michael Jackson medley at Catalyst Conference East. There are something like 12,000 people in attendance. Enjoy.

YouTube video