Phone Giants Battle Google Over Indoor Location Market
Indoor location positioning looks poised to be the next hot mobile service with its ability to enable smarter mobile offers and more accurate local searches. Google has an early lead but an analysis of patent filings points to a number of technology companies fighting for supremacy in this emerging space.
It has always been difficult to accurately track a person's location indoors. Since GPS is a satellite-based system, devices require a "line of sight" to satellites to operate. GPS generally does not function indoors and is particularly weak in large, enclosed spaces like malls,