Where do guests spend most time when they visit museum and science centres? What occupies wild girls and what engages the shy boys? What are the ‘hit’ and ‘miss’ places in your science centre? In this session, we investigate how to measure these elements and look at state-of-the-art methods currently in use or under development in Europe. What potential do these technologies have? Four different takes on the potential of indoor tracking technologies will be presented, leading to an open discussion where session participants can ask, challenge and share with speakers.