Apple iPhone users are lost but is there a security concern?

I couldn’t help but chuckle a bit at the opening excerpt of this article over at The Inquirer.  Although I’m not one for bashing Apple users, especially for my recent respect of the company and its products, but I thought it was humorous:
“Wi-Fi positioning accurate to within one or two continents.  THAT APPLE users are pretty much helpless basket cases is a given. But to discover that the pastel-hued gadgets on which they base their designer lifestyles are about as much use as a chocolate teapot is more amusing than a duck shooting Dick Cheney by mistake.”

Although this technology(dubbed “feature”) would be nice if it actually works correctly.  I think there might be a future security concern here.  This feature is supposed to triangulate the position of the iPhone user with WiFi access points within your area(for um “tracking” purposes so you know where you are).  The article complains that this feature currently is pretty useless but IF they did get it working what happens if you could reverse the technology?  What if you could triangulate the users position just by using the same technology but look up their positions from the access points instead?  This means you could find that person as long as they’re within range of your access point.  I’m sure this technology has safeguards against such a practice but as with everything in this industry, NOTHING is secure.