Thaddeus:

This paper introduces Thaddeus—a mobile phone-tablet system for mobile interaction with information visualisations. Our work is motivated by the roles smartphones and tablets play in everyday interactive spaces as well as anticipated developments in mobile sensing technology. We also aim to meet the social challenges of a data-driven society. We designed and implemented a system that uses mutual spatial awareness as an input mode, producing new interaction patterns for mobile settings. We gathered extensive user insight from two design studies and evaluated the system in a controlled experiment. We used qualitative and quantitative measures in the final evaluation. The results show that the system does not have a significant impact on performance, but users perceive it as pleasurable and easy to use. Thaddeus offers an enhanced user experience when exploring information on the go, and provides insights for future designs of mobile multi-device systems