Location-based Mobile Services

 

 A number of technologies have been trialed in recent years to provide location-based content delivery and context-aware services on the handheld platform:

 

1. Manual content navigation through a touch screen interface, virtual keypad or hardbuttons on the device
2. Wireless LAN software-based positioning systems 
3. Infrared tags or triggers 
4. Outdoors, GPS and assisted GPS triggering
5. Bluetooth tags or triggers
6.  RFID tags
7.  Ultrasonic positioning
8.  Visual recognition triggering