The availability of mobile device ecologies enables new types of ad-hoc co-located decision-making and sense-making practices in which people find, collect, discuss, and share information. However, little is known about what kind of device configurations are suitable for these types of tasks. This work contributes new insights into how people use configurations of devices for one representative example task: collaborative co-located trip-planning.

Using a collaborative travel planning application scenario (left), we study the effect of device configurations in a colocated multi-surface setting (centre) with three different conditions (right).

We present an empirical study that explores and compares three strategies to use multiple devices: no-overview, overview on own device, and a separate overview device. The results show that the overview facilitated decision- and sense-making during a collaborative trip-planning task by aiding groups to iterate their itinerary, organise locations and timings efficiently, and discover new insights. Groups shared and discussed more opinions, resulting in more democratic decision-making. Groups provided with a separate overview device engaged more frequently and spent more time in closely-coupled collaboration.



  • Investigating the Role of an Overview Device in Multi-Device Collaboration
  • F. Brudy, J. Budiman, S. Houben and N. Marquardt
  • To appear in Proceedings of the 2018 ACM SIGCHI Conference on Human Factors in Computing Systems (CHI’18).
  • [~25% acceptance rate; 2596 submissions]