Indoor location technology is clearly on the radar screen of giants, as much as Aruba's $1B in revenue and their huge market share.
You can read more about Meridian's indoor location technology here, and about Aruba's acquisition of Meridian here. Aruba has added new beacon technology to the Meridian base since those articles were written. Interestingly, HP themselves revealed some R&D recently on network-based indoor location technology. Details of the latest technology from Aruba, Meridian and HP is profiled in the recently updated report on indoor location technology.
Looks like indoor location technology is gaining in significance every day!