Pharos' iGPS-SD receiver is an ultra compact, highly sensitive, 12-channel GPS receiver that plugs directly into the secure digital port of a Pocket PC. Compatible with SDIO devices, the iGPS-SD is now bundled with StarCaddy Golf software. The StarCaddy Golf software uses Pharos iGPS-SD receiver to give golfers accurate, GPS-based yardages on the golf course. Golfers can use StarCaddy to determine the exact yardage to any course feature (greens, hazards etc), keep score and take the guesswork out of their game. StarCaddy uses detailed digital course maps created from satellite and aerial imagery to display the exact position of the golfer and all course features.