Yesterday I started working on QR codes. They have a strong relation to the idea of tiled walls.
I discovered a way to create them and to manipulate them so I can change color etc.
I was thinking of 3 QR codes printed on aluminum (dibond).
The first one I created yesterday is carrier of my statement:
We all have the right to be anonymous.
Using your Iphone or Ipad or any other device that can read QR codes makes it possible to encrypt the message. 
This possible encryption is a perfect match with the concept of the show.