The 2009 Symposium on Location and Context Awareness (LoCA) seeks new and significant research on systems, services, and applications to detect, interpret and use location and other contextual information. Context includes physiological, environmental and computational data whether sensed or inferred. In addition, context includes users' activities, goals, abilities, preferences, interruptibility, affordances, and surroundings. With context, we can expect computers to deliver information, services, and entertainment in a way that maximizes convenience and minimizes intrusion. Developing awareness involves research in sensing, systems, machine learning, human computer interaction, and design.

We seek technical papers describing original, previously unpublished research results. We are especially interested in submissions in the following areas but welcome submissions from other areas that are relevant to the theme of the symposium:

• New hardware platforms for sensing location and context.
• Machine learning techniques for inferring user location and context from low-level sensor data
• Location and context representation, management, and distribution
• Privacy policies & communication protocols for location & context information
• User studies of location- and context-aware systems
• Industrial case studies of end-to-end systems

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