The Thales air traffic management tool is present in many control centres worldwide. It’s based on a concept called « head up display », where all control actions are performed directly on the radar image. Intactile DESIGN was commissioned in 2009 to study and optimize the readability of the interface functions. As a product demanding a very high safety level, this application required a special degree of finishing. The graphic design of differents spaces relied heavily on the creation of a typography, adapted to technological constraints and practices of the ATC.