In this paper we present ASURþþ, a notation for describing, and reasoning about the design of, mobile interactive computer systems that combine physical and digital objects and information: mobile mixed systems. ASUR þþ helps a designer to specify the key characteristics of such systems and to focus on the relationship between physical objects and actions and digital information exchanges. Following a brief introduction to the notation, we illustrate its potential usefulness via examples based on the design of an augmented museum gallery. We conclude with a consideration of the integration of ASUR þþ into the system development process and its augmentation via associated methods and tools. q 2003 Elsevier B.V. All rights reserved.
['Emmanuel Dubois', 'Philip D. Gray', 'Laurence Nigay']
ASUR++: Supporting the design of mobile mixed systems