Indoor Mapping
The battle for detailed mapping has begun, and Google, with its head start on indoor positioning, is leading the pack. Other competitors include Nokia, Microsoft, Qualcomm and RIM. While Google is relying on cellular antennae and WiFi hotspots, other organizations are experimenting with gyroscopes, compasses, and movement tracking (analyzing location based on distance from a known location, such as a door to a building). The rollout of interior mapping from Google is available in several major US airports and in partnership with over 25 retailers.
(Source: onforb.es)
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