Keyphrases
- physical location
- application programming interface
- location information
- access points
- location privacy
- privacy enhancing
- context awareness
- access control
- identity management
- location based services
- personal data
- mobile environments
- ubiquitous computing
- user privacy
- security risks
- personal information
- service providers
- service oriented
- privacy policies
- web services
- privacy preserving
- service composition
- context aware
- electronic payment
- mobile applications
- mobile devices
- end users
- directory service
- mashup
- computing environments