The usability laboratory (U-Lab) is composed of 5 areas (test room, observation and debriefing rooms, maintenance and control
rooms), with different observation systems and recording devices. This equipment provides detailed and systematic observations of
human-computer interactions, without any direct interactions between observers and users. Eye tracking devices ' FaceLab5 (Seeing
Machines) and The Eye Tribe Tracker ' are fully integrated in the U-Lab. Thanks to these devices, it is possible to monitor eye
movements, facial expressions and data about the space environment as well.