Here’s another interesting use of location-based services on the cellphone: a company in the U.K. is pinpointing devices to track a shoppers every move to determine what stores are visited, how long they remain there, and what route they took, reported The Times Online. Developed by Path Intelligence, the service works because cellphones ping the network every few minutes, whether they are being used or not. The devices then use triangulation to determine a person’s approximate location. The Register, which also had a story today, said there’s many more applications. It said the system could track cars driving around a city, or people walking around a stadium to buy a hotdog, or visitors at trade shows to determine how many people visited a booth. The concerns about this service are obviously vast. The receiver apparently can’t get personal details about a person’s identity, but of course privacy is a big concern. Whether it works well is a whole other consideration. Triangulation out in the wild is not typically not that accurate, but this company claims it knows when you’ve entered a Starbucks.