The U.S. Patent Office has awarded an extremely broad patent on "Location-based services" to Where, Inc. (Boston, MA) -- Patent No. 7,848,765, filed on May 27, 2005, and -- that covers 31 claims ranging from sending an alert to offering a coupon when somebody crosses a geofence with a mobile device. Where CEO Walter Doyle calls it the "mother of all geofencing patents."
The patent abstract reads:
"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."
More Info: Where. Patent No. 7,848,765