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 IPS for some time now, figuring that modern stores and malls teeming with WiFi access points and reliable AGPS are good enough to make it work, and now they've hooked up with Midw