A golf information system and method which provides yardage and other information to a golfer relative to landmarks on a golf course operating in a "hands-free" or passive manner. In one embodiment, a differential global positioning satellite receiver (DGPS) is utilized to calculate a golf cart...http://www.google.fr/patents/US5685786?utm_source=gb-gplus-shareBrevet US5685786 - Passive golf information system and method
