At the workshop CAPTCHA in Mannheim in the Summer 2014, I created a room installation with Juliane Gutschmied and Lea Unger. We tried to create a real captcha-code on a wall. Therefore, we designed a wall which is able to deform the letters which we were screening onto it. The person who looked at it was able to discover the hidden and blurred writings on the wall with the help of an optical mouse.