This book envisions potential indoor location applications, overviews the related state of the art technologies, and presents original patented techniques and open source prototype systems. It includes a tutorial and sample code as a reference and starting point for readers who are interested in the techniques detail.

1. Introduction. 2. Overview of Mobile Systems. 3. Acoustic Ranging and Communication. 4. Localization Algorithms. 5. Guoguo: Enabling Fine-Grained Smartphone Localization. 6. Enhancing Location Accuracy and Robustness via Opportunistic Sensing. 7. Pushing Location Awareness to Context-Aware Augmented Reality. 8. Towards Location-Aware Mobile Social Networks with Missions. 9. Wearable Localization via Mobile Crowd Sensing. 10. Improving Location Services via Social Collaboration. 11. Hiding Media Data via Shaders: Enabling Private Sharing in the Clouds. 12. Conclusion and Future Directions.