The image is a photograph of a white paper with black text and illustrations on it. The text reads "How to make calls at this congress: 32C3" and "Use your GSM mobile phone". Below the text, there is an illustration of a rotary dial telephone. 

On the right side of the paper, there are three illustrations - a map of Hamburg, a globe, and a phone number. The map is in black and white and the phone number is in red. The illustration is in a simple, cartoon-like style.

The paper appears to be a instructions on how to make a call at the Congress, as indicated by the text. The instructions are written in black text on a white background.