Sony, Samsung, Nokia and others formed the In-Location Alliance last fall to advance indoor mapping.

CNN: The growing push to track your location indoors

Indoor mapping and tracking has long been seen as an important, potentially lucrative frontier for technology companies.

WSJ: Apple Buys Indoor GPS Specialist

The technology is now in place to enable indoor mapping and positioning with an accuracy of 1 meter or better!

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WifiSLAM has been offering the technology to application developers for indoor mapping and new types of retail and social-networking apps.

WSJ: Apple Buys Indoor GPS Specialist

WifiSLAM, which was founded by former Google software guru Joseph Huang, has been working with developers to build up technical capabilities for (among other areas) indoor mapping and retail.

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Google and Nokia are aggressively mapping venues and combined have nearly 40, 000 indoor maps worldwide.

FORBES: Indoor Venues Are The Next Frontier For Location-Based Services