What is Location-based Services??

Location-based services (LBS) are services that exploit knowledge about where a mobile device user is located. It is divided into 2 kinds: push and pull approach. Nowadays, it is common applied in advertising, called location-based advertising (LBA). It uses location-tracking technology in mobile network to target customer with location-specific advertising on their mobile devices.

The LBA push approach delivers information (send ads) to the user, determined by the device’s location. In addition, within the push approach, there are also two types of advertising; not requested and indirectly requested services. A not requested service, advertisers would send ads to users until users request not to send anymore. In contrast, an indirectly requested service, advertisers must receive permission from users before sending the ads to them.

The LBA pull approach, occurs when users request some information directly. In other words, users are seeking information (pulling) rather than information seeking them (pushing).

If you want to know more "Location-based advertising", please enjoy the following video explained by Professor Andrew Stephen.

Source:
http://www.geo.unizh.ch/publications/cartouche/lbs_lecturenotes_
steinigeretal2006.pdf
http://www.youtube.com/watch?v=QFYotXk7e7Q&feature=related