Its creator, German artist Nils Völker describes the interaction:
as soon a viewer comes close it instantly reacts by drawing back and tentatively following the movements of the observer. As long as he remains in a certain area in front of the installation it dynamically reacts to the viewers motion. As soon it does no longer detect someone close it reorganizes itself after a while and gently restarts wobbling around
( Nilsvoelker.com, accessed 05/09/2011, http://www.nilsvoelker.com/content/onehundredandeight/index.html)
The notion of screens is pushed by this work; the inflation and deflation of the bags is like pixels turning on and off. Through the detection of proximity, the screen can not only communicate unilaterally but establish a dialogue with the passers-by.