Indoor positioning systems have long been a holy grail for malls and big-box retailers where labyrinthine aisles and massive floorplans that rival small towns often leave customers begging for mercy, but the obstacles to deploying them are many: you've got to create detailed maps for every facility where you want it to work, and you need some sort of system for locating users with a reasonable level of precision since GPS is out of the picture. Start-up Point Inside has been hard at work on……
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