網路行銷最近流行LBS，尤其是foursquare的興起，創造不少話題，但，大家可能不知道，LBS已被Where公司獲得專利，要小心囉！
US7,848,765
Title : Location-based services
Filing Date : 2005.5.27.
Issue Date : 2010.12.7.
Abstract :
Provided herein are methods and systems relating to location-based services such as social networking, providing demographic information, tracking mobile devices, providing business information, providing an adaptable user interface, remotely effecting a change on a portable electronic device, providing a geofence, outputting location-based information on a mobile device, varying transmissions to and from a mobile device, providing location-based alerts, verifying transactions and tailoring information to the behavior of a user.
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