What do we want from a wearable user interface?

Graphical user interfaces are widely regarded as being inappropriate for use on wearable computers. This paper outlines Sulawesi, a user interface framework for wearable computing. Some shortcomings in Sulawesi are analyzed. Two specific areas of improvement, a high-level user interface toolkit and contextual measurement and adaption, are reported upon. Together these contribute towards the development of a proactive personal assistant application, the authors' ultimate aim.