chapter 1 Positioning Technologies in Location-Based Services / chapter 2 Wireless Location Technology in Location-Based Services / chapter 3 Location in Wireless Local Area Networks / chapter 4 Radio Frequency Identifi cation Positioning / chapter 5 Supporting Smart Mobile Navigation in a Smart Environment / chapter 6 Indoor Location Determination: Environmental Impacts, Algorithm Robustness, and Performance Evaluation / chapter 7 Location-Aware Access Control: Scenarios, Modeling Approaches, and Selected Issues / chapter 8 Location-Based Services and Privacy / chapter 9 Protecting Privacy in Location-Based Applications / chapter 10 Presence Services for the Support of Location-Based Applications / chapter 11 Data-Flow Management for Location-Based Service Applications Using the Zoning Concept / chapter 12 Assisted Global Navigation Satellite Systems: An Enabling Technology for High Demanding Location-Based Services