With recent development of sensor-rich smartphones with positioning devices such as GPS receiver, context-enriched services including location-aware services are rapidly becoming the most prominent future of computing industry. A new generation of context-enriched services is aimed at delivering contextualized, customer-oriented services by using context information such as location, social situation, people nearby, and user profile.

We invite investigators to contribute original research articles as well as review articles that will stimulate the continuing efforts to understand the state-of-the-art context-enriched and location-aware services. We are particularly interested in articles describing the recent trends in context-enriched services: customer-facing mobile applications and web services such as Facebook, Google, and Twitter. Potential topics include, but are not limited to:

• Middleware and service architecture for supporting context-enriched and location-aware services
• Context-aware delivery of information, alerts, and advertisements
• Recent advances in positioning and tracking systems
• Privacy issues in context-enriched and location-aware services
• Context-enriched information access and retrieval

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