Made me think about Sudo Mesh...

http://vimeo.com/92252467

"Ripple explores how information is propagated across loosely coupled networks with no central controller. The installation mimics the way ants communicate in the sense that information is relayed to the nearest neighbor only, as opposed to being broadcast to all participants. Where the ants use pheromones and touch as the message medium, Ripple uses infrared signals. The invisible infrared communication between the nodes is translated to visible light by each node so that viewers can get a glimpse of how information travels across a network when each node can only communicate with its immediate neighbors. Viewers may further interact with the installation by breaking the "line of sight" between the nodes there by blocking or reflecting the IR signals causing information to be lost or distorted."