Methods, systems, and computer program products are disclosed for providing a discount to a wireless device. One method obtains a location of the wireless device and retrieves the discount from memory. The discount is based on the location, and the discount increases as a distance from a reference location...http://www.google.com.tw/patents/US7627310?utm_source=gb-gplus-share專利 US7627310 - Methods, systems, and products for distance-based discounting
