Smartphone Tracking On Wireless Internet Carriers
The infamous hidden file on iPhones that tracks users every move is not the only way that smartphone users are being tracked by their devices. Wireless carriers also have detailed records of their customers' movements based on the mobile towers their phones connect to, but privacy advocates are most concerned about the vast amounts of data collected by the fast-growing and largely unregulated apps that use location based marketing.
There are lots of companies now with no controls around them that are using sensitive location data. They aren't required to tell you how long they're keeping the data, what they're using it for or who they're sharing it with. Some worry that the data could be used for many things other than the intended purpose. Insurance companies could use it to deny coverage or charge higher rates to those who frequent crime-ridden areas, for example.